./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff 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_4119b25b-f582-459d-a3a8-9dbbe35143c6/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4119b25b-f582-459d-a3a8-9dbbe35143c6/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4119b25b-f582-459d-a3a8-9dbbe35143c6/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4119b25b-f582-459d-a3a8-9dbbe35143c6/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4119b25b-f582-459d-a3a8-9dbbe35143c6/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4119b25b-f582-459d-a3a8-9dbbe35143c6/bin/utaipan-verify-t7M7D8N6sZ --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 9e5c7c8f34d0399e1ec13072e237ea7df9536407415bc8e3ff2e61c34b30de96 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:18:36,755 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:18:36,849 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4119b25b-f582-459d-a3a8-9dbbe35143c6/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-19 05:18:36,854 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:18:36,855 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:18:36,887 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:18:36,887 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:18:36,888 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:18:36,889 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:18:36,889 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:18:36,890 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:18:36,891 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:18:36,891 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:18:36,892 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:18:36,892 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:18:36,893 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:18:36,893 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:18:36,898 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:18:36,898 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:18:36,899 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:18:36,899 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:18:36,900 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:18:36,901 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:18:36,902 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:18:36,902 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:18:36,903 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:18:36,903 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:18:36,904 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:18:36,905 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:18:36,905 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:18:36,906 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:18:36,906 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:18:36,907 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:18:36,907 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:18:36,908 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:18:36,908 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:18:36,909 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:18:36,909 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:18:36,910 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:18:36,911 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:18:36,911 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:18:36,912 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:18:36,912 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:18:36,912 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:18:36,913 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:18:36,913 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_4119b25b-f582-459d-a3a8-9dbbe35143c6/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4119b25b-f582-459d-a3a8-9dbbe35143c6/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e5c7c8f34d0399e1ec13072e237ea7df9536407415bc8e3ff2e61c34b30de96 [2023-11-19 05:18:37,217 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:18:37,255 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:18:37,258 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:18:37,259 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:18:37,260 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:18:37,263 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4119b25b-f582-459d-a3a8-9dbbe35143c6/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lh-reducer.c [2023-11-19 05:18:40,470 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:18:40,794 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:18:40,795 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4119b25b-f582-459d-a3a8-9dbbe35143c6/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lh-reducer.c [2023-11-19 05:18:40,807 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4119b25b-f582-459d-a3a8-9dbbe35143c6/bin/utaipan-verify-t7M7D8N6sZ/data/b4546565a/fff468ae2807469d8edfa96300e95d71/FLAGd25a0fdff [2023-11-19 05:18:40,824 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4119b25b-f582-459d-a3a8-9dbbe35143c6/bin/utaipan-verify-t7M7D8N6sZ/data/b4546565a/fff468ae2807469d8edfa96300e95d71 [2023-11-19 05:18:40,831 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:18:40,833 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:18:40,838 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:18:40,838 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:18:40,844 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:18:40,845 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:18:40" (1/1) ... [2023-11-19 05:18:40,846 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c11e93b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:40, skipping insertion in model container [2023-11-19 05:18:40,846 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:18:40" (1/1) ... [2023-11-19 05:18:40,895 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:18:41,270 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_4119b25b-f582-459d-a3a8-9dbbe35143c6/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lh-reducer.c[8507,8520] [2023-11-19 05:18:41,280 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:18:41,291 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:18:41,395 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_4119b25b-f582-459d-a3a8-9dbbe35143c6/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lh-reducer.c[8507,8520] [2023-11-19 05:18:41,398 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:18:41,407 WARN L675 CHandler]: The function fopen is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:18:41,416 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:18:41,417 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:41 WrapperNode [2023-11-19 05:18:41,417 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:18:41,418 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:18:41,419 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:18:41,419 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:18:41,428 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:41" (1/1) ... [2023-11-19 05:18:41,463 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:41" (1/1) ... [2023-11-19 05:18:41,507 INFO L138 Inliner]: procedures = 17, calls = 203, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 376 [2023-11-19 05:18:41,508 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:18:41,508 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:18:41,509 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:18:41,509 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:18:41,520 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:41" (1/1) ... [2023-11-19 05:18:41,520 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:41" (1/1) ... [2023-11-19 05:18:41,534 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:41" (1/1) ... [2023-11-19 05:18:41,540 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:41" (1/1) ... [2023-11-19 05:18:41,582 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:41" (1/1) ... [2023-11-19 05:18:41,598 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:41" (1/1) ... [2023-11-19 05:18:41,601 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:41" (1/1) ... [2023-11-19 05:18:41,604 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:41" (1/1) ... [2023-11-19 05:18:41,613 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:18:41,626 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:18:41,626 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:18:41,626 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:18:41,627 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:41" (1/1) ... [2023-11-19 05:18:41,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:18:41,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4119b25b-f582-459d-a3a8-9dbbe35143c6/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:18:41,677 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4119b25b-f582-459d-a3a8-9dbbe35143c6/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:18:41,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4119b25b-f582-459d-a3a8-9dbbe35143c6/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:18:41,723 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 05:18:41,723 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2023-11-19 05:18:41,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:18:41,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:18:41,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:18:41,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:18:41,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:18:41,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 05:18:41,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:18:41,870 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:18:41,872 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:18:42,762 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:18:42,785 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:18:42,785 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 05:18:42,791 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:18:42 BoogieIcfgContainer [2023-11-19 05:18:42,792 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:18:42,796 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:18:42,796 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:18:42,801 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:18:42,801 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:18:40" (1/3) ... [2023-11-19 05:18:42,802 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2671a470 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:18:42, skipping insertion in model container [2023-11-19 05:18:42,802 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:41" (2/3) ... [2023-11-19 05:18:42,804 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2671a470 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:18:42, skipping insertion in model container [2023-11-19 05:18:42,805 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:18:42" (3/3) ... [2023-11-19 05:18:42,807 INFO L112 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+lh-reducer.c [2023-11-19 05:18:42,829 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:18:42,830 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 05:18:42,908 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:18:42,919 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;@bbe37ef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:18:42,920 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 05:18:42,924 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 11 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) [2023-11-19 05:18:42,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 05:18:42,933 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:18:42,933 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:18:42,934 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:18:42,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:18:42,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1202647943, now seen corresponding path program 1 times [2023-11-19 05:18:42,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:18:42,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442970534] [2023-11-19 05:18:42,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:18:42,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:18:43,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:18:44,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:18:44,301 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:18:44,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442970534] [2023-11-19 05:18:44,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442970534] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:18:44,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:18:44,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:18:44,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625755197] [2023-11-19 05:18:44,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:18:44,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:18:44,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:18:44,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:18:44,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:18:44,361 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 11 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) 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) [2023-11-19 05:18:44,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:18:44,441 INFO L93 Difference]: Finished difference Result 26 states and 34 transitions. [2023-11-19 05:18:44,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:18:44,444 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 [2023-11-19 05:18:44,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:18:44,452 INFO L225 Difference]: With dead ends: 26 [2023-11-19 05:18:44,452 INFO L226 Difference]: Without dead ends: 16 [2023-11-19 05:18:44,455 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 [2023-11-19 05:18:44,460 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 14 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:18:44,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 26 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:18:44,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-11-19 05:18:44,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 13. [2023-11-19 05:18:44,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 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) [2023-11-19 05:18:44,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2023-11-19 05:18:44,507 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 7 [2023-11-19 05:18:44,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:18:44,509 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2023-11-19 05:18:44,509 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) [2023-11-19 05:18:44,510 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2023-11-19 05:18:44,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-19 05:18:44,511 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:18:44,511 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:18:44,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:18:44,512 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:18:44,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:18:44,513 INFO L85 PathProgramCache]: Analyzing trace with hash 507664458, now seen corresponding path program 1 times [2023-11-19 05:18:44,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:18:44,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454945315] [2023-11-19 05:18:44,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:18:44,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:18:44,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:18:45,187 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:18:45,188 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:18:45,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454945315] [2023-11-19 05:18:45,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454945315] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:18:45,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916957035] [2023-11-19 05:18:45,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:18:45,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:18:45,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4119b25b-f582-459d-a3a8-9dbbe35143c6/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:18:45,196 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4119b25b-f582-459d-a3a8-9dbbe35143c6/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:18:45,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4119b25b-f582-459d-a3a8-9dbbe35143c6/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 05:18:45,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:18:45,756 INFO L262 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 05:18:45,763 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:18:45,813 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:18:45,813 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:18:45,877 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:18:45,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916957035] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:18:45,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [448146033] [2023-11-19 05:18:45,903 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-11-19 05:18:45,904 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:18:45,907 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:18:45,913 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:18:45,913 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:18:52,771 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:18:53,571 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '135#(and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~__tmp_3~0#1| 0) (<= 0 ~Id_MCDC_93~0) (= |ULTIMATE.start_main_~__tmp_1~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#main__Id_MCDC_119~0#1.base|) (= |ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_88~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~__tmp_1~0#1.base|) (<= 0 |ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_96~0#1|) (= |ULTIMATE.start_main_~main__Id_MCDC_116~0#1| 0) (<= 2 |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0#1.base|) (= |ULTIMATE.start_main_~#main__Id_MCDC_119~0#1.offset| 0) (= |ULTIMATE.start_main_~main__Id_MCDC_115~0#1| 0) (<= 2 |ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_88~0#1.base|) (<= 42 (mod ~Id_MCDC_93~0 4294967296)) (= |ULTIMATE.start_main_~__VERIFIER_assert__Id_MCDC_92~1#1| 0) (= |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_1~0#1| 0) (= ~__return_main~0 0) (= |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0#1.offset| 0))' at error location [2023-11-19 05:18:53,571 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:18:53,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:18:53,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2023-11-19 05:18:53,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013914850] [2023-11-19 05:18:53,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:18:53,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 05:18:53,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:18:53,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 05:18:53,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2023-11-19 05:18:53,578 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 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) [2023-11-19 05:18:53,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:18:53,785 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2023-11-19 05:18:53,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 05:18:53,787 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 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 12 [2023-11-19 05:18:53,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:18:53,788 INFO L225 Difference]: With dead ends: 33 [2023-11-19 05:18:53,788 INFO L226 Difference]: Without dead ends: 30 [2023-11-19 05:18:53,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2023-11-19 05:18:53,790 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 34 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:18:53,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 25 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:18:53,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-11-19 05:18:53,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2023-11-19 05:18:53,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.037037037037037) internal successors, (28), 27 states have internal predecessors, (28), 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) [2023-11-19 05:18:53,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2023-11-19 05:18:53,795 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 12 [2023-11-19 05:18:53,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:18:53,797 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2023-11-19 05:18:53,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 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) [2023-11-19 05:18:53,798 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2023-11-19 05:18:53,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-19 05:18:53,799 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:18:53,799 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1, 1, 1] [2023-11-19 05:18:53,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4119b25b-f582-459d-a3a8-9dbbe35143c6/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 05:18:54,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4119b25b-f582-459d-a3a8-9dbbe35143c6/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:18:54,021 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:18:54,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:18:54,021 INFO L85 PathProgramCache]: Analyzing trace with hash -522733127, now seen corresponding path program 2 times [2023-11-19 05:18:54,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:18:54,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89369017] [2023-11-19 05:18:54,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:18:54,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:18:54,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:18:54,650 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:18:54,653 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:18:54,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89369017] [2023-11-19 05:18:54,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89369017] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:18:54,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669069116] [2023-11-19 05:18:54,660 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 05:18:54,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:18:54,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4119b25b-f582-459d-a3a8-9dbbe35143c6/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:18:54,664 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4119b25b-f582-459d-a3a8-9dbbe35143c6/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:18:54,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4119b25b-f582-459d-a3a8-9dbbe35143c6/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 05:18:55,170 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-19 05:18:55,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 05:18:55,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-19 05:18:55,178 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:18:55,364 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 05:18:55,365 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 19 treesize of output 17 [2023-11-19 05:18:55,488 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-19 05:18:55,488 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:18:56,273 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-19 05:18:56,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669069116] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:18:56,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [240471430] [2023-11-19 05:18:56,276 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-11-19 05:18:56,277 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:18:56,277 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:18:56,277 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:18:56,278 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:19:00,651 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:19:01,298 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '390#(and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~__tmp_3~0#1| 0) (<= 0 ~Id_MCDC_93~0) (= |ULTIMATE.start_main_~__tmp_1~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#main__Id_MCDC_119~0#1.base|) (= |ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_88~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~__tmp_1~0#1.base|) (<= 0 |ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_96~0#1|) (= |ULTIMATE.start_main_~main__Id_MCDC_116~0#1| 0) (<= 2 |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0#1.base|) (= |ULTIMATE.start_main_~#main__Id_MCDC_119~0#1.offset| 0) (= |ULTIMATE.start_main_~main__Id_MCDC_115~0#1| 0) (<= 2 |ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_88~0#1.base|) (<= 42 (mod ~Id_MCDC_93~0 4294967296)) (= |ULTIMATE.start_main_~__VERIFIER_assert__Id_MCDC_92~1#1| 0) (= |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_1~0#1| 0) (= ~__return_main~0 0) (= |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0#1.offset| 0))' at error location [2023-11-19 05:19:01,299 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:19:01,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:19:01,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2023-11-19 05:19:01,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672690247] [2023-11-19 05:19:01,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:19:01,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-19 05:19:01,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:19:01,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-19 05:19:01,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=545, Unknown=0, NotChecked=0, Total=650 [2023-11-19 05:19:01,304 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand has 20 states, 20 states have (on average 2.75) internal successors, (55), 20 states have internal predecessors, (55), 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) [2023-11-19 05:19:01,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:19:01,976 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2023-11-19 05:19:01,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-19 05:19:01,977 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.75) internal successors, (55), 20 states have internal predecessors, (55), 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 27 [2023-11-19 05:19:01,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:19:01,977 INFO L225 Difference]: With dead ends: 39 [2023-11-19 05:19:01,977 INFO L226 Difference]: Without dead ends: 0 [2023-11-19 05:19:01,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=328, Invalid=1232, Unknown=0, NotChecked=0, Total=1560 [2023-11-19 05:19:01,979 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 73 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:19:01,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 28 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:19:01,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-19 05:19:01,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-19 05:19:01,982 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) [2023-11-19 05:19:01,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-19 05:19:01,982 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2023-11-19 05:19:01,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:19:01,982 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 05:19:01,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.75) internal successors, (55), 20 states have internal predecessors, (55), 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) [2023-11-19 05:19:01,983 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-19 05:19:01,983 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-19 05:19:01,986 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 05:19:02,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4119b25b-f582-459d-a3a8-9dbbe35143c6/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 05:19:02,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4119b25b-f582-459d-a3a8-9dbbe35143c6/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:19:02,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-19 05:19:02,214 INFO L899 garLoopResultBuilder]: For program point L161(lines 161 236) no Hoare annotation was computed. [2023-11-19 05:19:02,214 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-19 05:19:02,214 INFO L899 garLoopResultBuilder]: For program point L190(lines 190 208) no Hoare annotation was computed. [2023-11-19 05:19:02,214 INFO L899 garLoopResultBuilder]: For program point L221(line 221) no Hoare annotation was computed. [2023-11-19 05:19:02,215 INFO L899 garLoopResultBuilder]: For program point L219(lines 219 227) no Hoare annotation was computed. [2023-11-19 05:19:02,216 INFO L899 garLoopResultBuilder]: For program point L182(lines 182 229) no Hoare annotation was computed. [2023-11-19 05:19:02,216 INFO L899 garLoopResultBuilder]: For program point L180(lines 180 234) no Hoare annotation was computed. [2023-11-19 05:19:02,216 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-19 05:19:02,216 INFO L899 garLoopResultBuilder]: For program point main_returnLabel#1(lines 133 237) no Hoare annotation was computed. [2023-11-19 05:19:02,216 INFO L899 garLoopResultBuilder]: For program point L197(lines 197 207) no Hoare annotation was computed. [2023-11-19 05:19:02,217 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 221) no Hoare annotation was computed. [2023-11-19 05:19:02,217 INFO L899 garLoopResultBuilder]: For program point L175(lines 167 235) no Hoare annotation was computed. [2023-11-19 05:19:02,221 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1] [2023-11-19 05:19:02,223 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 05:19:02,231 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:19:02 BoogieIcfgContainer [2023-11-19 05:19:02,232 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 05:19:02,232 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 05:19:02,232 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 05:19:02,233 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 05:19:02,233 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:18:42" (3/4) ... [2023-11-19 05:19:02,235 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 05:19:02,257 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2023-11-19 05:19:02,258 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2023-11-19 05:19:02,259 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-19 05:19:02,260 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 05:19:02,261 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 05:19:02,482 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4119b25b-f582-459d-a3a8-9dbbe35143c6/bin/utaipan-verify-t7M7D8N6sZ/witness.graphml [2023-11-19 05:19:02,483 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4119b25b-f582-459d-a3a8-9dbbe35143c6/bin/utaipan-verify-t7M7D8N6sZ/witness.yml [2023-11-19 05:19:02,483 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 05:19:02,488 INFO L158 Benchmark]: Toolchain (without parser) took 21650.65ms. Allocated memory was 155.2MB in the beginning and 889.2MB in the end (delta: 734.0MB). Free memory was 112.5MB in the beginning and 759.9MB in the end (delta: -647.5MB). Peak memory consumption was 88.3MB. Max. memory is 16.1GB. [2023-11-19 05:19:02,489 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 102.8MB. Free memory was 72.1MB in the beginning and 72.1MB in the end (delta: 27.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:19:02,490 INFO L158 Benchmark]: CACSL2BoogieTranslator took 579.47ms. Allocated memory is still 155.2MB. Free memory was 112.5MB in the beginning and 95.4MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-19 05:19:02,490 INFO L158 Benchmark]: Boogie Procedure Inliner took 89.46ms. Allocated memory is still 155.2MB. Free memory was 95.4MB in the beginning and 92.0MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 05:19:02,491 INFO L158 Benchmark]: Boogie Preprocessor took 116.37ms. Allocated memory is still 155.2MB. Free memory was 92.0MB in the beginning and 88.7MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 05:19:02,491 INFO L158 Benchmark]: RCFGBuilder took 1166.41ms. Allocated memory is still 155.2MB. Free memory was 88.7MB in the beginning and 79.7MB in the end (delta: 8.9MB). Peak memory consumption was 33.5MB. Max. memory is 16.1GB. [2023-11-19 05:19:02,494 INFO L158 Benchmark]: TraceAbstraction took 19436.08ms. Allocated memory was 155.2MB in the beginning and 889.2MB in the end (delta: 734.0MB). Free memory was 78.7MB in the beginning and 774.6MB in the end (delta: -695.9MB). Peak memory consumption was 38.0MB. Max. memory is 16.1GB. [2023-11-19 05:19:02,495 INFO L158 Benchmark]: Witness Printer took 250.78ms. Allocated memory is still 889.2MB. Free memory was 774.6MB in the beginning and 759.9MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-19 05:19:02,500 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 102.8MB. Free memory was 72.1MB in the beginning and 72.1MB in the end (delta: 27.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 579.47ms. Allocated memory is still 155.2MB. Free memory was 112.5MB in the beginning and 95.4MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 89.46ms. Allocated memory is still 155.2MB. Free memory was 95.4MB in the beginning and 92.0MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 116.37ms. Allocated memory is still 155.2MB. Free memory was 92.0MB in the beginning and 88.7MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1166.41ms. Allocated memory is still 155.2MB. Free memory was 88.7MB in the beginning and 79.7MB in the end (delta: 8.9MB). Peak memory consumption was 33.5MB. Max. memory is 16.1GB. * TraceAbstraction took 19436.08ms. Allocated memory was 155.2MB in the beginning and 889.2MB in the end (delta: 734.0MB). Free memory was 78.7MB in the beginning and 774.6MB in the end (delta: -695.9MB). Peak memory consumption was 38.0MB. Max. memory is 16.1GB. * Witness Printer took 250.78ms. Allocated memory is still 889.2MB. Free memory was 774.6MB in the beginning and 759.9MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 221]: 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, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 19.3s, OverallIterations: 3, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 121 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 121 mSDsluCounter, 79 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 58 mSDsCounter, 21 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 187 IncrementalHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 21 mSolverCounterUnsat, 21 mSDtfsCounter, 187 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 151 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=2, InterpolantAutomatonStates: 31, 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, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 0 LocationsWithAnnotation, 0 PreInvPairs, 0 NumberOfFragments, 0 HoareAnnotationTreeSize, 0 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 0 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 85 NumberOfCodeBlocks, 75 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 117 ConstructedInterpolants, 16 QuantifiedInterpolants, 1252 SizeOfPredicates, 12 NumberOfNonLiveVariables, 1116 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 45/135 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 RESULT: Ultimate proved your program to be correct! [2023-11-19 05:19:02,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4119b25b-f582-459d-a3a8-9dbbe35143c6/bin/utaipan-verify-t7M7D8N6sZ/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