./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursified_loop-invariants/recursified_linear-inequality-inv-b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_00c6e07b-1b51-48dd-bb5c-5b8625f89fb7/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00c6e07b-1b51-48dd-bb5c-5b8625f89fb7/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00c6e07b-1b51-48dd-bb5c-5b8625f89fb7/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00c6e07b-1b51-48dd-bb5c-5b8625f89fb7/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursified_loop-invariants/recursified_linear-inequality-inv-b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00c6e07b-1b51-48dd-bb5c-5b8625f89fb7/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00c6e07b-1b51-48dd-bb5c-5b8625f89fb7/bin/utaipan-verify-nQ1chXbOIh --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 c117c02695ddb101583ad96117955e242a853299846ac846441a25e3775ce242 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 19:28:08,150 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 19:28:08,216 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00c6e07b-1b51-48dd-bb5c-5b8625f89fb7/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 19:28:08,220 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 19:28:08,220 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 19:28:08,243 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 19:28:08,244 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 19:28:08,244 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 19:28:08,245 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 19:28:08,245 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 19:28:08,246 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 19:28:08,246 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 19:28:08,247 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 19:28:08,247 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 19:28:08,248 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 19:28:08,248 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 19:28:08,249 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 19:28:08,249 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 19:28:08,250 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 19:28:08,251 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 19:28:08,251 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 19:28:08,252 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 19:28:08,253 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 19:28:08,253 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 19:28:08,254 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 19:28:08,254 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 19:28:08,254 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 19:28:08,255 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 19:28:08,255 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 19:28:08,256 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 19:28:08,256 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 19:28:08,257 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 19:28:08,257 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 19:28:08,257 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 19:28:08,257 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 19:28:08,258 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 19:28:08,258 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 19:28:08,258 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:28:08,258 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 19:28:08,258 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 19:28:08,259 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 19:28:08,259 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 19:28:08,259 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 19:28:08,259 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 19:28:08,259 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 19:28:08,260 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 19:28:08,260 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 19:28:08,260 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_00c6e07b-1b51-48dd-bb5c-5b8625f89fb7/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00c6e07b-1b51-48dd-bb5c-5b8625f89fb7/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c117c02695ddb101583ad96117955e242a853299846ac846441a25e3775ce242 [2023-12-02 19:28:08,458 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 19:28:08,478 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 19:28:08,480 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 19:28:08,482 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 19:28:08,482 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 19:28:08,483 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00c6e07b-1b51-48dd-bb5c-5b8625f89fb7/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/recursified_loop-invariants/recursified_linear-inequality-inv-b.c [2023-12-02 19:28:11,259 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 19:28:11,436 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 19:28:11,437 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00c6e07b-1b51-48dd-bb5c-5b8625f89fb7/sv-benchmarks/c/recursified_loop-invariants/recursified_linear-inequality-inv-b.c [2023-12-02 19:28:11,445 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00c6e07b-1b51-48dd-bb5c-5b8625f89fb7/bin/utaipan-verify-nQ1chXbOIh/data/a6016d12a/8c0760c5808b439e89808747af5b825c/FLAGd53337622 [2023-12-02 19:28:11,460 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00c6e07b-1b51-48dd-bb5c-5b8625f89fb7/bin/utaipan-verify-nQ1chXbOIh/data/a6016d12a/8c0760c5808b439e89808747af5b825c [2023-12-02 19:28:11,463 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 19:28:11,464 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 19:28:11,466 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 19:28:11,466 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 19:28:11,472 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 19:28:11,472 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:28:11" (1/1) ... [2023-12-02 19:28:11,474 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f82d4d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:28:11, skipping insertion in model container [2023-12-02 19:28:11,474 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:28:11" (1/1) ... [2023-12-02 19:28:11,496 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 19:28:11,654 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_00c6e07b-1b51-48dd-bb5c-5b8625f89fb7/sv-benchmarks/c/recursified_loop-invariants/recursified_linear-inequality-inv-b.c[1476,1489] [2023-12-02 19:28:11,659 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_00c6e07b-1b51-48dd-bb5c-5b8625f89fb7/sv-benchmarks/c/recursified_loop-invariants/recursified_linear-inequality-inv-b.c[1549,1562] [2023-12-02 19:28:11,660 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:28:11,670 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 19:28:11,688 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_00c6e07b-1b51-48dd-bb5c-5b8625f89fb7/sv-benchmarks/c/recursified_loop-invariants/recursified_linear-inequality-inv-b.c[1476,1489] [2023-12-02 19:28:11,689 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_00c6e07b-1b51-48dd-bb5c-5b8625f89fb7/sv-benchmarks/c/recursified_loop-invariants/recursified_linear-inequality-inv-b.c[1549,1562] [2023-12-02 19:28:11,691 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:28:11,707 INFO L206 MainTranslator]: Completed translation [2023-12-02 19:28:11,707 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:28:11 WrapperNode [2023-12-02 19:28:11,708 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 19:28:11,709 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 19:28:11,709 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 19:28:11,709 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 19:28:11,717 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:28:11" (1/1) ... [2023-12-02 19:28:11,724 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:28:11" (1/1) ... [2023-12-02 19:28:11,743 INFO L138 Inliner]: procedures = 13, calls = 46, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 79 [2023-12-02 19:28:11,743 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 19:28:11,744 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 19:28:11,744 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 19:28:11,744 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 19:28:11,777 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:28:11" (1/1) ... [2023-12-02 19:28:11,777 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:28:11" (1/1) ... [2023-12-02 19:28:11,779 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:28:11" (1/1) ... [2023-12-02 19:28:11,780 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:28:11" (1/1) ... [2023-12-02 19:28:11,786 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:28:11" (1/1) ... [2023-12-02 19:28:11,788 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:28:11" (1/1) ... [2023-12-02 19:28:11,790 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:28:11" (1/1) ... [2023-12-02 19:28:11,791 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:28:11" (1/1) ... [2023-12-02 19:28:11,793 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 19:28:11,794 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 19:28:11,794 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 19:28:11,794 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 19:28:11,795 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:28:11" (1/1) ... [2023-12-02 19:28:11,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:28:11,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00c6e07b-1b51-48dd-bb5c-5b8625f89fb7/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:28:11,827 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00c6e07b-1b51-48dd-bb5c-5b8625f89fb7/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 19:28:11,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00c6e07b-1b51-48dd-bb5c-5b8625f89fb7/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 19:28:11,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 19:28:11,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 19:28:11,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 19:28:11,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 19:28:11,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 19:28:11,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 19:28:11,862 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 19:28:11,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 19:28:11,862 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_12_to_15_0 [2023-12-02 19:28:11,862 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_12_to_15_0 [2023-12-02 19:28:11,945 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 19:28:11,947 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 19:28:12,095 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 19:28:12,115 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 19:28:12,115 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 19:28:12,117 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:28:12 BoogieIcfgContainer [2023-12-02 19:28:12,117 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 19:28:12,120 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 19:28:12,120 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 19:28:12,123 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 19:28:12,124 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:28:11" (1/3) ... [2023-12-02 19:28:12,125 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ed342b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:28:12, skipping insertion in model container [2023-12-02 19:28:12,125 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:28:11" (2/3) ... [2023-12-02 19:28:12,125 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ed342b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:28:12, skipping insertion in model container [2023-12-02 19:28:12,125 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:28:12" (3/3) ... [2023-12-02 19:28:12,127 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_linear-inequality-inv-b.c [2023-12-02 19:28:12,145 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 19:28:12,146 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-02 19:28:12,191 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 19:28:12,196 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;@47c37df1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 19:28:12,196 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-02 19:28:12,201 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 14 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 19:28:12,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-02 19:28:12,207 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:28:12,207 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:28:12,208 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:28:12,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:28:12,212 INFO L85 PathProgramCache]: Analyzing trace with hash 947785726, now seen corresponding path program 1 times [2023-12-02 19:28:12,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:28:12,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213509783] [2023-12-02 19:28:12,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:28:12,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:28:12,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:28:12,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:28:12,675 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:28:12,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213509783] [2023-12-02 19:28:12,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213509783] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:28:12,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:28:12,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:28:12,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889335260] [2023-12-02 19:28:12,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:28:12,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:28:12,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:28:12,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:28:12,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:28:12,715 INFO L87 Difference]: Start difference. First operand has 17 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 14 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 19:28:12,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:28:12,806 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2023-12-02 19:28:12,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 19:28:12,808 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2023-12-02 19:28:12,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:28:12,816 INFO L225 Difference]: With dead ends: 26 [2023-12-02 19:28:12,816 INFO L226 Difference]: Without dead ends: 14 [2023-12-02 19:28:12,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-02 19:28:12,823 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 2 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:28:12,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 27 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:28:12,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-12-02 19:28:12,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2023-12-02 19:28:12,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 10 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 19:28:12,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2023-12-02 19:28:12,863 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 10 [2023-12-02 19:28:12,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:28:12,863 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2023-12-02 19:28:12,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 19:28:12,863 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2023-12-02 19:28:12,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-02 19:28:12,864 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:28:12,864 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:28:12,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 19:28:12,865 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:28:12,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:28:12,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1341401249, now seen corresponding path program 1 times [2023-12-02 19:28:12,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:28:12,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887806091] [2023-12-02 19:28:12,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:28:12,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:28:12,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:28:13,952 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 19:28:13,952 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:28:13,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887806091] [2023-12-02 19:28:13,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887806091] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:28:13,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942323210] [2023-12-02 19:28:13,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:28:13,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:28:13,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00c6e07b-1b51-48dd-bb5c-5b8625f89fb7/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:28:13,955 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00c6e07b-1b51-48dd-bb5c-5b8625f89fb7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:28:13,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00c6e07b-1b51-48dd-bb5c-5b8625f89fb7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 19:28:14,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:28:14,129 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 61 conjunts are in the unsatisfiable core [2023-12-02 19:28:14,136 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:28:14,190 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-12-02 19:28:14,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 23 treesize of output 19 [2023-12-02 19:28:14,765 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse9 (select |c_old(#memory_int)| |c_func_to_recursive_line_12_to_15_0_#in~v.base|))) (let ((.cse0 (exists ((v_z_1 Int) (v_y_1 Int)) (and (<= v_z_1 255) (<= 0 v_z_1) (= |c_#memory_int| (let ((.cse11 (store |c_old(#memory_int)| |c_func_to_recursive_line_12_to_15_0_#in~v.base| (store .cse9 |c_func_to_recursive_line_12_to_15_0_#in~v.offset| (+ (* 256 v_y_1) v_z_1))))) (let ((.cse12 (select .cse11 |c_func_to_recursive_line_12_to_15_0_#in~s.base|))) (let ((.cse13 (+ v_z_1 (mod (select .cse12 |c_func_to_recursive_line_12_to_15_0_#in~s.offset|) 256)))) (let ((.cse10 (store |c_old(#memory_int)| |c_func_to_recursive_line_12_to_15_0_#in~s.base| (store (select |c_old(#memory_int)| |c_func_to_recursive_line_12_to_15_0_#in~s.base|) |c_func_to_recursive_line_12_to_15_0_#in~s.offset| .cse13)))) (store .cse10 |c_func_to_recursive_line_12_to_15_0_#in~i.base| (store (select .cse10 |c_func_to_recursive_line_12_to_15_0_#in~i.base|) |c_func_to_recursive_line_12_to_15_0_#in~i.offset| (+ (select (select (store .cse11 |c_func_to_recursive_line_12_to_15_0_#in~s.base| (store .cse12 |c_func_to_recursive_line_12_to_15_0_#in~s.offset| .cse13)) |c_func_to_recursive_line_12_to_15_0_#in~i.base|) |c_func_to_recursive_line_12_to_15_0_#in~i.offset|) 1))))))))))) (.cse1 (= |c_func_to_recursive_line_12_to_15_0_#in~v.base| |c_func_to_recursive_line_12_to_15_0_#in~s.base|)) (.cse2 (= |c_func_to_recursive_line_12_to_15_0_#in~v.offset| |c_func_to_recursive_line_12_to_15_0_#in~s.offset|))) (or (and .cse0 .cse1 .cse2) (and .cse0 (= |c_func_to_recursive_line_12_to_15_0_#in~v.base| |c_func_to_recursive_line_12_to_15_0_#in~i.base|) (= |c_func_to_recursive_line_12_to_15_0_#in~i.offset| |c_func_to_recursive_line_12_to_15_0_#in~v.offset|)) (and (exists ((v_y_1 Int)) (let ((.cse4 (* 256 v_y_1)) (.cse3 (select (select |c_#memory_int| |c_func_to_recursive_line_12_to_15_0_#in~v.base|) |c_func_to_recursive_line_12_to_15_0_#in~v.offset|))) (and (<= .cse3 (+ .cse4 255)) (= (let ((.cse5 (let ((.cse7 (store |c_old(#memory_int)| |c_func_to_recursive_line_12_to_15_0_#in~v.base| (store .cse9 |c_func_to_recursive_line_12_to_15_0_#in~v.offset| .cse3)))) (store .cse7 |c_func_to_recursive_line_12_to_15_0_#in~s.base| (let ((.cse8 (select .cse7 |c_func_to_recursive_line_12_to_15_0_#in~s.base|))) (store .cse8 |c_func_to_recursive_line_12_to_15_0_#in~s.offset| (+ .cse3 (mod (select .cse8 |c_func_to_recursive_line_12_to_15_0_#in~s.offset|) 256) (* (- 256) v_y_1)))))))) (store .cse5 |c_func_to_recursive_line_12_to_15_0_#in~i.base| (let ((.cse6 (select .cse5 |c_func_to_recursive_line_12_to_15_0_#in~i.base|))) (store .cse6 |c_func_to_recursive_line_12_to_15_0_#in~i.offset| (+ (select .cse6 |c_func_to_recursive_line_12_to_15_0_#in~i.offset|) 1))))) |c_#memory_int|) (<= .cse4 .cse3)))) (or (not .cse1) (not .cse2)))))) is different from true [2023-12-02 19:28:14,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:28:14,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:28:14,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:28:14,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 32 [2023-12-02 19:28:14,993 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 40 [2023-12-02 19:28:15,050 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 2 not checked. [2023-12-02 19:28:15,050 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:28:15,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942323210] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:28:15,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1961365672] [2023-12-02 19:28:15,563 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2023-12-02 19:28:15,563 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:28:15,566 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:96) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-12-02 19:28:15,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 19:28:15,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2023-12-02 19:28:15,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110770042] [2023-12-02 19:28:15,569 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 19:28:15,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-02 19:28:15,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:28:15,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-02 19:28:15,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=201, Unknown=1, NotChecked=28, Total=272 [2023-12-02 19:28:15,572 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 15 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 13 states have internal predecessors, (17), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 19:28:16,321 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse16 (select |c_old(#memory_int)| |c_func_to_recursive_line_12_to_15_0_#in~v.base|)) (.cse4 (select (select |c_#memory_int| |c_func_to_recursive_line_12_to_15_0_#in~v.base|) |c_func_to_recursive_line_12_to_15_0_#in~v.offset|))) (let ((.cse8 (store |c_old(#memory_int)| |c_func_to_recursive_line_12_to_15_0_#in~v.base| (store .cse16 |c_func_to_recursive_line_12_to_15_0_#in~v.offset| .cse4))) (.cse0 (= |c_func_to_recursive_line_12_to_15_0_#in~v.base| |c_func_to_recursive_line_12_to_15_0_#in~s.base|))) (let ((.cse20 (not .cse0)) (.cse2 (= |c_func_to_recursive_line_12_to_15_0_#in~v.offset| |c_func_to_recursive_line_12_to_15_0_#in~s.offset|)) (.cse9 (select .cse8 |c_func_to_recursive_line_12_to_15_0_#in~s.base|))) (let ((.cse23 (= c_func_to_recursive_line_12_to_15_0_~v.base c_func_to_recursive_line_12_to_15_0_~s.base)) (.cse18 (= |c_func_to_recursive_line_12_to_15_0_#in~v.base| |c_func_to_recursive_line_12_to_15_0_#in~i.base|)) (.cse10 (mod (select .cse9 |c_func_to_recursive_line_12_to_15_0_#in~s.offset|) 256)) (.cse3 (or .cse20 (not .cse2))) (.cse15 (select |c_old(#memory_int)| |c_func_to_recursive_line_12_to_15_0_#in~s.base|))) (and (let ((.cse1 (exists ((v_z_1 Int) (v_y_1 Int)) (and (<= v_z_1 255) (<= 0 v_z_1) (= (let ((.cse12 (store |c_old(#memory_int)| |c_func_to_recursive_line_12_to_15_0_#in~v.base| (store .cse16 |c_func_to_recursive_line_12_to_15_0_#in~v.offset| (+ (* 256 v_y_1) v_z_1))))) (let ((.cse13 (select .cse12 |c_func_to_recursive_line_12_to_15_0_#in~s.base|))) (let ((.cse14 (+ v_z_1 (mod (select .cse13 |c_func_to_recursive_line_12_to_15_0_#in~s.offset|) 256)))) (let ((.cse11 (store |c_old(#memory_int)| |c_func_to_recursive_line_12_to_15_0_#in~s.base| (store .cse15 |c_func_to_recursive_line_12_to_15_0_#in~s.offset| .cse14)))) (store .cse11 c_func_to_recursive_line_12_to_15_0_~i.base (store (select .cse11 c_func_to_recursive_line_12_to_15_0_~i.base) c_func_to_recursive_line_12_to_15_0_~i.offset (+ (select (select (store .cse12 |c_func_to_recursive_line_12_to_15_0_#in~s.base| (store .cse13 |c_func_to_recursive_line_12_to_15_0_#in~s.offset| .cse14)) c_func_to_recursive_line_12_to_15_0_~i.base) c_func_to_recursive_line_12_to_15_0_~i.offset) 1))))))) |c_#memory_int|))))) (or (and .cse0 .cse1 .cse2) (and .cse3 (exists ((v_y_1 Int)) (let ((.cse5 (* 256 v_y_1))) (and (<= .cse4 (+ .cse5 255)) (<= .cse5 .cse4) (= (let ((.cse6 (store .cse8 |c_func_to_recursive_line_12_to_15_0_#in~s.base| (store .cse9 |c_func_to_recursive_line_12_to_15_0_#in~s.offset| (+ .cse4 .cse10 (* (- 256) v_y_1)))))) (store .cse6 c_func_to_recursive_line_12_to_15_0_~i.base (let ((.cse7 (select .cse6 c_func_to_recursive_line_12_to_15_0_~i.base))) (store .cse7 c_func_to_recursive_line_12_to_15_0_~i.offset (+ (select .cse7 c_func_to_recursive_line_12_to_15_0_~i.offset) 1))))) |c_#memory_int|))))) (and (= |c_func_to_recursive_line_12_to_15_0_#in~v.offset| c_func_to_recursive_line_12_to_15_0_~i.offset) (= |c_func_to_recursive_line_12_to_15_0_#in~v.base| c_func_to_recursive_line_12_to_15_0_~i.base) .cse1))) (or (let ((.cse17 (= c_func_to_recursive_line_12_to_15_0_~i.base c_func_to_recursive_line_12_to_15_0_~s.base))) (and (or (not .cse17) (= |c_func_to_recursive_line_12_to_15_0_#in~s.base| |c_func_to_recursive_line_12_to_15_0_#in~i.base|)) (or .cse17 (let ((.cse19 (= c_func_to_recursive_line_12_to_15_0_~i.base c_func_to_recursive_line_12_to_15_0_~v.base))) (and (= c_func_to_recursive_line_12_to_15_0_~s.offset |c_func_to_recursive_line_12_to_15_0_#in~s.offset|) (= |c_func_to_recursive_line_12_to_15_0_#in~s.base| c_func_to_recursive_line_12_to_15_0_~s.base) (or .cse18 (not .cse19)) .cse20 (or (and (= |c_func_to_recursive_line_12_to_15_0_#in~v.base| c_func_to_recursive_line_12_to_15_0_~v.base) (or (not (= (select (select |c_old(#memory_int)| c_func_to_recursive_line_12_to_15_0_~s.base) c_func_to_recursive_line_12_to_15_0_~s.offset) 0)) (let ((.cse21 (select (select |c_#memory_int| c_func_to_recursive_line_12_to_15_0_~v.base) c_func_to_recursive_line_12_to_15_0_~v.offset))) (< .cse21 (let ((.cse22 (select (select |c_#memory_int| c_func_to_recursive_line_12_to_15_0_~s.base) c_func_to_recursive_line_12_to_15_0_~s.offset))) (+ (* 256 (div (+ (* (- 1) .cse22) .cse21) 256)) .cse22 1))))) (= c_func_to_recursive_line_12_to_15_0_~v.offset |c_func_to_recursive_line_12_to_15_0_#in~v.offset|)) .cse19)))))) .cse23) (= c_func_to_recursive_line_12_to_15_0_~i.base |c_func_to_recursive_line_12_to_15_0_#in~i.base|) (= |c_func_to_recursive_line_12_to_15_0_#in~i.offset| c_func_to_recursive_line_12_to_15_0_~i.offset) (or (not .cse23) .cse0) (let ((.cse24 (exists ((v_z_1 Int) (v_y_1 Int)) (and (<= v_z_1 255) (<= 0 v_z_1) (= |c_#memory_int| (let ((.cse29 (store |c_old(#memory_int)| |c_func_to_recursive_line_12_to_15_0_#in~v.base| (store .cse16 |c_func_to_recursive_line_12_to_15_0_#in~v.offset| (+ (* 256 v_y_1) v_z_1))))) (let ((.cse30 (select .cse29 |c_func_to_recursive_line_12_to_15_0_#in~s.base|))) (let ((.cse31 (+ v_z_1 (mod (select .cse30 |c_func_to_recursive_line_12_to_15_0_#in~s.offset|) 256)))) (let ((.cse28 (store |c_old(#memory_int)| |c_func_to_recursive_line_12_to_15_0_#in~s.base| (store .cse15 |c_func_to_recursive_line_12_to_15_0_#in~s.offset| .cse31)))) (store .cse28 |c_func_to_recursive_line_12_to_15_0_#in~i.base| (store (select .cse28 |c_func_to_recursive_line_12_to_15_0_#in~i.base|) |c_func_to_recursive_line_12_to_15_0_#in~i.offset| (+ (select (select (store .cse29 |c_func_to_recursive_line_12_to_15_0_#in~s.base| (store .cse30 |c_func_to_recursive_line_12_to_15_0_#in~s.offset| .cse31)) |c_func_to_recursive_line_12_to_15_0_#in~i.base|) |c_func_to_recursive_line_12_to_15_0_#in~i.offset|) 1)))))))))))) (or (and .cse24 .cse0 .cse2) (and .cse24 .cse18 (= |c_func_to_recursive_line_12_to_15_0_#in~i.offset| |c_func_to_recursive_line_12_to_15_0_#in~v.offset|)) (and (exists ((v_y_1 Int)) (let ((.cse25 (* 256 v_y_1))) (and (<= .cse4 (+ .cse25 255)) (= (let ((.cse26 (store .cse8 |c_func_to_recursive_line_12_to_15_0_#in~s.base| (store .cse9 |c_func_to_recursive_line_12_to_15_0_#in~s.offset| (+ .cse4 .cse10 (* (- 256) v_y_1)))))) (store .cse26 |c_func_to_recursive_line_12_to_15_0_#in~i.base| (let ((.cse27 (select .cse26 |c_func_to_recursive_line_12_to_15_0_#in~i.base|))) (store .cse27 |c_func_to_recursive_line_12_to_15_0_#in~i.offset| (+ (select .cse27 |c_func_to_recursive_line_12_to_15_0_#in~i.offset|) 1))))) |c_#memory_int|) (<= .cse25 .cse4)))) .cse3)))))))) is different from true [2023-12-02 19:28:18,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:28:18,911 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2023-12-02 19:28:18,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 19:28:18,912 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 13 states have internal predecessors, (17), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 15 [2023-12-02 19:28:18,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:28:18,913 INFO L225 Difference]: With dead ends: 20 [2023-12-02 19:28:18,913 INFO L226 Difference]: Without dead ends: 16 [2023-12-02 19:28:18,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=80, Invalid=387, Unknown=3, NotChecked=82, Total=552 [2023-12-02 19:28:18,915 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 9 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 19:28:18,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 38 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 74 Invalid, 0 Unknown, 28 Unchecked, 0.6s Time] [2023-12-02 19:28:18,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-12-02 19:28:18,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2023-12-02 19:28:18,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 10 states have (on average 1.1) internal successors, (11), 11 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 19:28:18,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2023-12-02 19:28:18,921 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 15 [2023-12-02 19:28:18,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:28:18,922 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2023-12-02 19:28:18,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 13 states have internal predecessors, (17), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 19:28:18,922 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2023-12-02 19:28:18,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-02 19:28:18,923 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:28:18,923 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:28:18,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00c6e07b-1b51-48dd-bb5c-5b8625f89fb7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 19:28:19,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00c6e07b-1b51-48dd-bb5c-5b8625f89fb7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-02 19:28:19,129 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:28:19,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:28:19,130 INFO L85 PathProgramCache]: Analyzing trace with hash 2114283542, now seen corresponding path program 2 times [2023-12-02 19:28:19,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:28:19,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708524157] [2023-12-02 19:28:19,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:28:19,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:28:19,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 19:28:19,208 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 19:28:19,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 19:28:19,274 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 19:28:19,274 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 19:28:19,275 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-02 19:28:19,276 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-02 19:28:19,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 19:28:19,280 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1] [2023-12-02 19:28:19,283 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 19:28:19,304 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem12 could not be translated [2023-12-02 19:28:19,305 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem4 could not be translated [2023-12-02 19:28:19,305 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem5 could not be translated [2023-12-02 19:28:19,306 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem4 could not be translated [2023-12-02 19:28:19,306 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem5 could not be translated [2023-12-02 19:28:19,307 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem4 could not be translated [2023-12-02 19:28:19,307 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem5 could not be translated [2023-12-02 19:28:19,308 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem14 could not be translated [2023-12-02 19:28:19,308 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem13 could not be translated [2023-12-02 19:28:19,316 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 07:28:19 BoogieIcfgContainer [2023-12-02 19:28:19,316 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 19:28:19,317 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 19:28:19,317 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 19:28:19,317 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 19:28:19,317 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:28:12" (3/4) ... [2023-12-02 19:28:19,318 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-12-02 19:28:19,324 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem12 could not be translated [2023-12-02 19:28:19,325 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem4 could not be translated [2023-12-02 19:28:19,325 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem5 could not be translated [2023-12-02 19:28:19,325 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem4 could not be translated [2023-12-02 19:28:19,325 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem5 could not be translated [2023-12-02 19:28:19,326 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem4 could not be translated [2023-12-02 19:28:19,326 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem5 could not be translated [2023-12-02 19:28:19,327 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem14 could not be translated [2023-12-02 19:28:19,327 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem13 could not be translated [2023-12-02 19:28:19,358 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00c6e07b-1b51-48dd-bb5c-5b8625f89fb7/bin/utaipan-verify-nQ1chXbOIh/witness.graphml [2023-12-02 19:28:19,359 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 19:28:19,359 INFO L158 Benchmark]: Toolchain (without parser) took 7895.29ms. Allocated memory was 107.0MB in the beginning and 172.0MB in the end (delta: 65.0MB). Free memory was 58.2MB in the beginning and 73.7MB in the end (delta: -15.5MB). Peak memory consumption was 52.5MB. Max. memory is 16.1GB. [2023-12-02 19:28:19,360 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 107.0MB. Free memory was 59.4MB in the beginning and 59.1MB in the end (delta: 223.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 19:28:19,360 INFO L158 Benchmark]: CACSL2BoogieTranslator took 242.07ms. Allocated memory is still 107.0MB. Free memory was 58.0MB in the beginning and 47.2MB in the end (delta: 10.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-12-02 19:28:19,361 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.85ms. Allocated memory is still 107.0MB. Free memory was 47.2MB in the beginning and 45.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 19:28:19,361 INFO L158 Benchmark]: Boogie Preprocessor took 49.36ms. Allocated memory was 107.0MB in the beginning and 142.6MB in the end (delta: 35.7MB). Free memory was 45.8MB in the beginning and 114.5MB in the end (delta: -68.7MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. [2023-12-02 19:28:19,361 INFO L158 Benchmark]: RCFGBuilder took 323.06ms. Allocated memory is still 142.6MB. Free memory was 114.4MB in the beginning and 104.9MB in the end (delta: 9.6MB). Peak memory consumption was 9.1MB. Max. memory is 16.1GB. [2023-12-02 19:28:19,362 INFO L158 Benchmark]: TraceAbstraction took 7196.14ms. Allocated memory was 142.6MB in the beginning and 172.0MB in the end (delta: 29.4MB). Free memory was 104.2MB in the beginning and 76.8MB in the end (delta: 27.4MB). Peak memory consumption was 56.7MB. Max. memory is 16.1GB. [2023-12-02 19:28:19,362 INFO L158 Benchmark]: Witness Printer took 41.97ms. Allocated memory is still 172.0MB. Free memory was 76.8MB in the beginning and 73.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-02 19:28:19,365 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 107.0MB. Free memory was 59.4MB in the beginning and 59.1MB in the end (delta: 223.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 242.07ms. Allocated memory is still 107.0MB. Free memory was 58.0MB in the beginning and 47.2MB in the end (delta: 10.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.85ms. Allocated memory is still 107.0MB. Free memory was 47.2MB in the beginning and 45.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 49.36ms. Allocated memory was 107.0MB in the beginning and 142.6MB in the end (delta: 35.7MB). Free memory was 45.8MB in the beginning and 114.5MB in the end (delta: -68.7MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. * RCFGBuilder took 323.06ms. Allocated memory is still 142.6MB. Free memory was 114.4MB in the beginning and 104.9MB in the end (delta: 9.6MB). Peak memory consumption was 9.1MB. Max. memory is 16.1GB. * TraceAbstraction took 7196.14ms. Allocated memory was 142.6MB in the beginning and 172.0MB in the end (delta: 29.4MB). Free memory was 104.2MB in the beginning and 76.8MB in the end (delta: 27.4MB). Peak memory consumption was 56.7MB. Max. memory is 16.1GB. * Witness Printer took 41.97ms. Allocated memory is still 172.0MB. Free memory was 76.8MB in the beginning and 73.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem12 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem14 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem13 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem12 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem14 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem13 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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 - CounterExampleResult [Line: 52]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L38] unsigned char n = __VERIFIER_nondet_uchar(); [L38] unsigned char n = __VERIFIER_nondet_uchar(); [L39] EXPR \read(n) VAL [n={6:0}] [L39] COND FALSE !(n == 0) [L46] unsigned char v = 0; [L47] unsigned char s = 0; [L48] unsigned int i = 0; VAL [i={5:0}, n={6:0}, s={7:0}, v={8:0}] [L49] CALL func_to_recursive_line_12_to_15_0(&v, &n, &s, &i) VAL [i={5:0}, n={6:0}, s={7:0}, v={8:0}] [L22] EXPR \read(*i) [L22] EXPR \read(*n) VAL [i={5:0}, i={5:0}, n={6:0}, n={6:0}, s={7:0}, s={7:0}, v={8:0}, v={8:0}] [L22] COND TRUE (*i) < (*n) [L25] *v = __VERIFIER_nondet_uchar() [L26] EXPR \read(*s) [L26] EXPR \read(*v) [L26] *s += *v [L27] EXPR \read(*i) [L27] ++(*i) [L29] CALL func_to_recursive_line_12_to_15_0(v, n, s, i) VAL [i={5:0}, n={6:0}, s={7:0}, v={8:0}] [L22] EXPR \read(*i) [L22] EXPR \read(*n) VAL [i={5:0}, i={5:0}, n={6:0}, n={6:0}, s={7:0}, s={7:0}, v={8:0}, v={8:0}] [L22] COND TRUE (*i) < (*n) [L25] *v = __VERIFIER_nondet_uchar() [L26] EXPR \read(*s) [L26] EXPR \read(*v) [L26] *s += *v [L27] EXPR \read(*i) [L27] ++(*i) [L29] CALL func_to_recursive_line_12_to_15_0(v, n, s, i) VAL [i={5:0}, n={6:0}, s={7:0}, v={8:0}] [L22] EXPR \read(*i) [L22] EXPR \read(*n) VAL [i={5:0}, i={5:0}, n={6:0}, n={6:0}, s={7:0}, s={7:0}, v={8:0}, v={8:0}] [L22] COND FALSE !((*i) < (*n)) [L29] RET func_to_recursive_line_12_to_15_0(v, n, s, i) VAL [i={5:0}, i={5:0}, n={6:0}, n={6:0}, s={7:0}, s={7:0}, v={8:0}, v={8:0}] [L29] RET func_to_recursive_line_12_to_15_0(v, n, s, i) VAL [i={5:0}, i={5:0}, n={6:0}, n={6:0}, s={7:0}, s={7:0}, v={8:0}, v={8:0}] [L49] RET func_to_recursive_line_12_to_15_0(&v, &n, &s, &i) VAL [i={5:0}, n={6:0}, s={7:0}, v={8:0}] [L50] EXPR \read(s) [L50] EXPR \read(v) VAL [i={5:0}, n={6:0}, s={7:0}, v={8:0}] [L50] COND TRUE s < v [L52] reach_error() VAL [i={5:0}, n={6:0}, s={7:0}, v={8:0}] - UnprovableResult [Line: 60]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 17 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 7.1s, OverallIterations: 3, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 11 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11 mSDsluCounter, 65 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 28 IncrementalHoareTripleChecker+Unchecked, 48 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 110 IncrementalHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 17 mSDtfsCounter, 110 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 15, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 37 ConstructedInterpolants, 3 QuantifiedInterpolants, 2092 SizeOfPredicates, 15 NumberOfNonLiveVariables, 172 ConjunctsInSsa, 61 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 2/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-12-02 19:28:19,388 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00c6e07b-1b51-48dd-bb5c-5b8625f89fb7/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE