./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/reducercommutativity/rangesum.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/reducercommutativity/rangesum.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E --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 4dc91bf2fc8981aab63c1ee768384f1c8f580edfe4618d65089a78f799b6ddb8 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 05:41:56,815 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 05:41:56,897 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 05:41:56,903 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 05:41:56,903 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 05:41:56,929 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 05:41:56,930 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 05:41:56,930 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 05:41:56,930 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 05:41:56,930 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 05:41:56,930 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 05:41:56,931 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 05:41:56,931 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 05:41:56,931 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 05:41:56,931 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 05:41:56,931 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 05:41:56,931 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 05:41:56,931 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 05:41:56,932 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 05:41:56,932 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 05:41:56,932 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 05:41:56,932 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 05:41:56,932 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 05:41:56,933 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 05:41:56,933 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 05:41:56,933 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 05:41:56,933 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 05:41:56,933 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 05:41:56,933 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 05:41:56,933 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 05:41:56,933 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 05:41:56,933 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 05:41:56,934 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 05:41:56,934 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 05:41:56,934 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 05:41:56,934 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 05:41:56,934 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 05:41:56,934 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 05:41:56,934 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:41:56,934 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 05:41:56,935 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 05:41:56,935 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 05:41:56,935 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 05:41:56,935 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 05:41:56,935 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 05:41:56,935 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 05:41:56,935 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 05:41:56,935 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E 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 -> 4dc91bf2fc8981aab63c1ee768384f1c8f580edfe4618d65089a78f799b6ddb8 [2024-11-14 05:41:57,255 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 05:41:57,265 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 05:41:57,268 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 05:41:57,270 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 05:41:57,272 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 05:41:57,274 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/reducercommutativity/rangesum.i Unable to find full path for "g++" [2024-11-14 05:41:59,204 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 05:41:59,520 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 05:41:59,524 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/sv-benchmarks/c/reducercommutativity/rangesum.i [2024-11-14 05:41:59,536 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/data/9cc55efd1/485a8ccd7c2b42479532074638e04e5d/FLAGb1e6309cc [2024-11-14 05:41:59,562 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/data/9cc55efd1/485a8ccd7c2b42479532074638e04e5d [2024-11-14 05:41:59,565 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 05:41:59,567 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 05:41:59,573 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 05:41:59,575 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 05:41:59,580 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 05:41:59,580 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:41:59" (1/1) ... [2024-11-14 05:41:59,584 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7aa30871 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:41:59, skipping insertion in model container [2024-11-14 05:41:59,584 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:41:59" (1/1) ... [2024-11-14 05:41:59,607 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 05:41:59,825 WARN L250 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_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/sv-benchmarks/c/reducercommutativity/rangesum.i[1544,1557] [2024-11-14 05:41:59,835 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:41:59,852 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 05:41:59,889 WARN L250 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_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/sv-benchmarks/c/reducercommutativity/rangesum.i[1544,1557] [2024-11-14 05:41:59,890 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:41:59,909 INFO L204 MainTranslator]: Completed translation [2024-11-14 05:41:59,910 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:41:59 WrapperNode [2024-11-14 05:41:59,910 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 05:41:59,911 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 05:41:59,911 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 05:41:59,912 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 05:41:59,920 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:41:59" (1/1) ... [2024-11-14 05:41:59,928 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:41:59" (1/1) ... [2024-11-14 05:41:59,951 INFO L138 Inliner]: procedures = 17, calls = 22, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 74 [2024-11-14 05:41:59,953 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 05:41:59,954 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 05:41:59,954 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 05:41:59,954 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 05:41:59,964 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:41:59" (1/1) ... [2024-11-14 05:41:59,965 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:41:59" (1/1) ... [2024-11-14 05:41:59,971 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:41:59" (1/1) ... [2024-11-14 05:41:59,971 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:41:59" (1/1) ... [2024-11-14 05:41:59,984 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:41:59" (1/1) ... [2024-11-14 05:41:59,992 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:41:59" (1/1) ... [2024-11-14 05:41:59,993 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:41:59" (1/1) ... [2024-11-14 05:41:59,997 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:41:59" (1/1) ... [2024-11-14 05:41:59,999 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 05:42:00,004 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 05:42:00,004 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 05:42:00,004 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 05:42:00,005 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:41:59" (1/1) ... [2024-11-14 05:42:00,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:42:00,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:42:00,055 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 05:42:00,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 05:42:00,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 05:42:00,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 05:42:00,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-14 05:42:00,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-14 05:42:00,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 05:42:00,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 05:42:00,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-14 05:42:00,090 INFO L130 BoogieDeclarations]: Found specification of procedure rangesum [2024-11-14 05:42:00,090 INFO L138 BoogieDeclarations]: Found implementation of procedure rangesum [2024-11-14 05:42:00,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-14 05:42:00,185 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 05:42:00,187 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 05:42:00,419 INFO L? ?]: Removed 18 outVars from TransFormulas that were not future-live. [2024-11-14 05:42:00,420 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 05:42:00,521 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 05:42:00,522 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-14 05:42:00,522 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:42:00 BoogieIcfgContainer [2024-11-14 05:42:00,522 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 05:42:00,529 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 05:42:00,530 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 05:42:00,537 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 05:42:00,538 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 05:41:59" (1/3) ... [2024-11-14 05:42:00,539 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c18e25c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:42:00, skipping insertion in model container [2024-11-14 05:42:00,540 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:41:59" (2/3) ... [2024-11-14 05:42:00,541 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c18e25c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:42:00, skipping insertion in model container [2024-11-14 05:42:00,541 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:42:00" (3/3) ... [2024-11-14 05:42:00,543 INFO L112 eAbstractionObserver]: Analyzing ICFG rangesum.i [2024-11-14 05:42:00,562 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 05:42:00,564 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG rangesum.i that has 2 procedures, 19 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2024-11-14 05:42:00,632 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 05:42:00,649 INFO L333 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, 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;@2219e9b7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 05:42:00,650 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 05:42:00,655 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 05:42:00,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 05:42:00,663 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:42:00,664 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:42:00,665 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:42:00,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:42:00,670 INFO L85 PathProgramCache]: Analyzing trace with hash -2036473061, now seen corresponding path program 1 times [2024-11-14 05:42:00,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:42:00,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236264083] [2024-11-14 05:42:00,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:42:00,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:42:00,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:42:01,166 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-14 05:42:01,169 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:42:01,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236264083] [2024-11-14 05:42:01,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236264083] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:42:01,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:42:01,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 05:42:01,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619086690] [2024-11-14 05:42:01,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:42:01,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:42:01,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:42:01,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:42:01,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:42:01,217 INFO L87 Difference]: Start difference. First operand has 19 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 05:42:01,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:42:01,295 INFO L93 Difference]: Finished difference Result 36 states and 47 transitions. [2024-11-14 05:42:01,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:42:01,299 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 21 [2024-11-14 05:42:01,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:42:01,305 INFO L225 Difference]: With dead ends: 36 [2024-11-14 05:42:01,305 INFO L226 Difference]: Without dead ends: 17 [2024-11-14 05:42:01,309 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:42:01,314 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:42:01,315 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:42:01,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-14 05:42:01,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-11-14 05:42:01,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 05:42:01,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2024-11-14 05:42:01,349 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 21 [2024-11-14 05:42:01,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:42:01,349 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2024-11-14 05:42:01,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 05:42:01,350 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2024-11-14 05:42:01,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-14 05:42:01,354 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:42:01,354 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:42:01,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 05:42:01,355 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:42:01,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:42:01,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1310271732, now seen corresponding path program 1 times [2024-11-14 05:42:01,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:42:01,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592107556] [2024-11-14 05:42:01,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:42:01,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:42:01,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:42:01,581 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-14 05:42:01,581 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:42:01,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592107556] [2024-11-14 05:42:01,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592107556] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:42:01,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615872375] [2024-11-14 05:42:01,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:42:01,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:42:01,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:42:01,584 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:42:01,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 05:42:01,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:42:01,723 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 05:42:01,730 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:42:01,812 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-14 05:42:01,812 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:42:01,890 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-14 05:42:01,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615872375] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:42:01,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1239901901] [2024-11-14 05:42:01,917 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2024-11-14 05:42:01,917 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:42:01,920 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:42:01,924 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:42:01,925 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:42:02,482 INFO L197 IcfgInterpreter]: Interpreting procedure rangesum with input of size 25 for LOIs [2024-11-14 05:42:02,522 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:42:02,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1239901901] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:42:02,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:42:02,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5, 4, 4] total 14 [2024-11-14 05:42:02,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106966564] [2024-11-14 05:42:02,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:42:02,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 05:42:02,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:42:02,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 05:42:02,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-11-14 05:42:02,834 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 05:42:03,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:42:03,323 INFO L93 Difference]: Finished difference Result 30 states and 40 transitions. [2024-11-14 05:42:03,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 05:42:03,325 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2024-11-14 05:42:03,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:42:03,326 INFO L225 Difference]: With dead ends: 30 [2024-11-14 05:42:03,326 INFO L226 Difference]: Without dead ends: 18 [2024-11-14 05:42:03,326 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2024-11-14 05:42:03,327 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 19 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:42:03,327 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 12 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:42:03,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-11-14 05:42:03,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-11-14 05:42:03,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 05:42:03,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2024-11-14 05:42:03,342 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 22 [2024-11-14 05:42:03,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:42:03,342 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2024-11-14 05:42:03,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 05:42:03,343 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2024-11-14 05:42:03,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-14 05:42:03,343 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:42:03,344 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:42:03,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-14 05:42:03,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:42:03,545 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:42:03,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:42:03,545 INFO L85 PathProgramCache]: Analyzing trace with hash -124946889, now seen corresponding path program 1 times [2024-11-14 05:42:03,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:42:03,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629235230] [2024-11-14 05:42:03,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:42:03,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:42:03,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:42:03,774 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-14 05:42:03,774 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:42:03,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629235230] [2024-11-14 05:42:03,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629235230] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:42:03,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:42:03,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 05:42:03,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814462826] [2024-11-14 05:42:03,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:42:03,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 05:42:03,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:42:03,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 05:42:03,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:42:03,776 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 05:42:03,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:42:03,830 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2024-11-14 05:42:03,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 05:42:03,831 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2024-11-14 05:42:03,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:42:03,831 INFO L225 Difference]: With dead ends: 28 [2024-11-14 05:42:03,832 INFO L226 Difference]: Without dead ends: 19 [2024-11-14 05:42:03,832 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:42:03,833 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 13 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 05:42:03,833 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 18 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 05:42:03,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-11-14 05:42:03,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-11-14 05:42:03,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 05:42:03,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2024-11-14 05:42:03,847 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 25 [2024-11-14 05:42:03,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:42:03,849 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2024-11-14 05:42:03,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 05:42:03,849 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2024-11-14 05:42:03,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-14 05:42:03,851 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:42:03,851 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:42:03,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-14 05:42:03,851 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:42:03,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:42:03,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1887464718, now seen corresponding path program 1 times [2024-11-14 05:42:03,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:42:03,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725084585] [2024-11-14 05:42:03,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:42:03,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:42:03,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:42:04,061 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-14 05:42:04,061 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:42:04,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725084585] [2024-11-14 05:42:04,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725084585] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:42:04,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423798364] [2024-11-14 05:42:04,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:42:04,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:42:04,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:42:04,065 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:42:04,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 05:42:04,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:42:04,173 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 05:42:04,175 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:42:04,215 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-14 05:42:04,216 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:42:04,258 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-14 05:42:04,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423798364] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:42:04,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2074995015] [2024-11-14 05:42:04,264 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2024-11-14 05:42:04,264 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:42:04,265 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:42:04,265 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:42:04,265 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:42:08,957 INFO L197 IcfgInterpreter]: Interpreting procedure rangesum with input of size 1 for LOIs [2024-11-14 05:42:09,161 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:42:09,433 WARN L873 $PredicateComparison]: unable to prove that (exists ((v_rangesum_~cnt~0_52 Int) (v_rangesum_~ret~0_52 Int) (v_rangesum_~i~1_49 Int)) (let ((.cse2 (= v_rangesum_~cnt~0_52 0)) (.cse0 (<= 0 v_rangesum_~cnt~0_52))) (and (let ((.cse1 (<= 0 v_rangesum_~i~1_49))) (or (and .cse0 .cse1) (and .cse1 .cse2 (= v_rangesum_~ret~0_52 0)))) (or (and .cse2 (= |c_rangesum_#res| 0)) (and (not .cse2) (let ((.cse16 (div v_rangesum_~ret~0_52 v_rangesum_~cnt~0_52))) (let ((.cse15 (+ |c_rangesum_#res| 4294967296)) (.cse22 (mod (+ .cse16 1) 4294967296)) (.cse17 (+ v_rangesum_~ret~0_52 1)) (.cse18 (= (mod v_rangesum_~ret~0_52 v_rangesum_~cnt~0_52) 0))) (let ((.cse3 (not .cse18)) (.cse4 (<= .cse17 0)) (.cse8 (<= .cse22 2147483647)) (.cse9 (and .cse0 (= |c_rangesum_#res| .cse22))) (.cse5 (<= 2147483648 .cse22)) (.cse7 (and .cse0 (= .cse15 .cse22))) (.cse11 (<= (+ v_rangesum_~cnt~0_52 1) 0))) (or (and (let ((.cse12 (mod .cse16 4294967296))) (or (and (let ((.cse10 (= .cse12 |c_rangesum_#res|))) (let ((.cse6 (and .cse10 .cse11))) (or (and .cse3 .cse4 (or (and .cse5 (or .cse6 .cse7)) (and .cse8 (or .cse9 .cse6)))) .cse6 (and .cse0 .cse10)))) (<= .cse12 2147483647)) (and (let ((.cse14 (= .cse15 .cse12))) (let ((.cse13 (and .cse14 .cse11))) (or .cse13 (and .cse3 (or (and .cse8 (or .cse13 .cse9)) (and (or .cse13 .cse7) .cse5)) .cse4) (and .cse0 .cse14)))) (<= 2147483648 .cse12)))) (or (< 0 .cse17) .cse18)) (and .cse3 .cse4 (let ((.cse20 (mod (+ .cse16 4294967295) 4294967296))) (or (and (let ((.cse19 (and (= .cse20 |c_rangesum_#res|) .cse11))) (or (and .cse8 (or .cse9 .cse19)) (and (or .cse19 .cse7) .cse5))) (<= .cse20 2147483647)) (and (<= 2147483648 .cse20) (let ((.cse21 (and (= .cse20 .cse15) .cse11))) (or (and .cse8 (or .cse9 .cse21)) (and .cse5 (or .cse21 .cse7)))))))))))))) (<= c_~N~0 v_rangesum_~i~1_49)))) is different from true [2024-11-14 05:42:22,458 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '405#true' at error location [2024-11-14 05:42:22,458 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:42:22,458 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:42:22,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-14 05:42:22,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451464617] [2024-11-14 05:42:22,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:42:22,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 05:42:22,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:42:22,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 05:42:22,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=244, Unknown=14, NotChecked=32, Total=342 [2024-11-14 05:42:22,460 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-14 05:42:22,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:42:22,504 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2024-11-14 05:42:22,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 05:42:22,505 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 26 [2024-11-14 05:42:22,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:42:22,506 INFO L225 Difference]: With dead ends: 35 [2024-11-14 05:42:22,506 INFO L226 Difference]: Without dead ends: 20 [2024-11-14 05:42:22,506 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 60 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=52, Invalid=244, Unknown=14, NotChecked=32, Total=342 [2024-11-14 05:42:22,507 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 05:42:22,507 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 05:42:22,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-14 05:42:22,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2024-11-14 05:42:22,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 05:42:22,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2024-11-14 05:42:22,516 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 26 [2024-11-14 05:42:22,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:42:22,516 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2024-11-14 05:42:22,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-14 05:42:22,517 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2024-11-14 05:42:22,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-14 05:42:22,517 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:42:22,518 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:42:22,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-14 05:42:22,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:42:22,718 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:42:22,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:42:22,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1838353593, now seen corresponding path program 2 times [2024-11-14 05:42:22,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:42:22,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024625821] [2024-11-14 05:42:22,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:42:22,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:42:22,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:42:22,899 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-14 05:42:22,899 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:42:22,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024625821] [2024-11-14 05:42:22,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024625821] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:42:22,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731378365] [2024-11-14 05:42:22,903 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:42:22,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:42:22,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:42:22,907 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:42:22,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-14 05:42:22,986 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-14 05:42:22,986 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:42:22,988 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 05:42:22,992 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:42:23,095 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-14 05:42:23,095 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:42:23,195 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-14 05:42:23,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731378365] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:42:23,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2053935327] [2024-11-14 05:42:23,198 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2024-11-14 05:42:23,198 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:42:23,198 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:42:23,199 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:42:23,199 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:42:27,380 INFO L197 IcfgInterpreter]: Interpreting procedure rangesum with input of size 1 for LOIs [2024-11-14 05:42:27,469 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:42:27,704 WARN L873 $PredicateComparison]: unable to prove that (exists ((v_rangesum_~cnt~0_74 Int) (v_rangesum_~i~1_78 Int) (v_rangesum_~ret~0_74 Int)) (let ((.cse2 (<= 0 v_rangesum_~cnt~0_74)) (.cse1 (= v_rangesum_~cnt~0_74 0))) (and (let ((.cse0 (<= 0 v_rangesum_~i~1_78))) (or (and .cse0 (= v_rangesum_~ret~0_74 0) .cse1) (and .cse0 .cse2))) (or (and .cse1 (= |c_rangesum_#res| 0)) (and (let ((.cse19 (+ v_rangesum_~ret~0_74 1)) (.cse18 (= (mod v_rangesum_~ret~0_74 v_rangesum_~cnt~0_74) 0)) (.cse17 (div v_rangesum_~ret~0_74 v_rangesum_~cnt~0_74))) (let ((.cse22 (mod (+ .cse17 1) 4294967296)) (.cse20 (not .cse18)) (.cse21 (<= .cse19 0)) (.cse15 (+ |c_rangesum_#res| 4294967296)) (.cse23 (mod (+ 4294967295 .cse17) 4294967296))) (let ((.cse8 (<= (+ v_rangesum_~cnt~0_74 1) 0)) (.cse6 (<= 2147483648 .cse23)) (.cse7 (and .cse20 .cse21 (= .cse23 .cse15))) (.cse3 (<= .cse23 2147483647)) (.cse5 (and .cse20 .cse21 (= .cse23 |c_rangesum_#res|))) (.cse10 (and (= .cse22 .cse15) .cse20 .cse21)) (.cse9 (<= 2147483648 .cse22)) (.cse11 (<= .cse22 2147483647)) (.cse12 (and .cse20 .cse21 (= .cse22 |c_rangesum_#res|))) (.cse13 (or .cse18 (< 0 .cse19))) (.cse14 (mod .cse17 4294967296))) (or (and (let ((.cse4 (and .cse13 (= .cse14 .cse15)))) (or (and (or (and .cse3 (or .cse4 .cse5)) (and .cse6 (or .cse4 .cse7))) .cse8) (and .cse2 (or (and .cse9 (or .cse4 .cse10)) (and .cse11 (or .cse4 .cse12)))))) (<= 2147483648 .cse14)) (and (let ((.cse16 (and (= .cse14 |c_rangesum_#res|) .cse13))) (or (and .cse8 (or (and .cse6 (or .cse16 .cse7)) (and .cse3 (or .cse5 .cse16)))) (and .cse2 (or (and (or .cse10 .cse16) .cse9) (and .cse11 (or .cse12 .cse16)))))) (<= .cse14 2147483647)))))) (not .cse1))) (<= c_~N~0 v_rangesum_~i~1_78)))) is different from true [2024-11-14 05:42:42,358 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '662#true' at error location [2024-11-14 05:42:42,358 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:42:42,358 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:42:42,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 6] total 10 [2024-11-14 05:42:42,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822164376] [2024-11-14 05:42:42,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:42:42,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-14 05:42:42,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:42:42,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-14 05:42:42,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=346, Unknown=9, NotChecked=38, Total=462 [2024-11-14 05:42:42,360 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-14 05:42:42,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:42:42,459 INFO L93 Difference]: Finished difference Result 35 states and 45 transitions. [2024-11-14 05:42:42,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 05:42:42,460 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 27 [2024-11-14 05:42:42,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:42:42,461 INFO L225 Difference]: With dead ends: 35 [2024-11-14 05:42:42,461 INFO L226 Difference]: Without dead ends: 21 [2024-11-14 05:42:42,461 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 60 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 15.0s TimeCoverageRelationStatistics Valid=78, Invalid=379, Unknown=9, NotChecked=40, Total=506 [2024-11-14 05:42:42,462 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 4 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:42:42,463 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 41 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:42:42,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-14 05:42:42,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-11-14 05:42:42,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 05:42:42,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2024-11-14 05:42:42,472 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 27 [2024-11-14 05:42:42,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:42:42,473 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2024-11-14 05:42:42,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-14 05:42:42,473 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2024-11-14 05:42:42,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-14 05:42:42,474 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:42:42,474 INFO L215 NwaCegarLoop]: trace histogram [6, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:42:42,493 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-14 05:42:42,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:42:42,675 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:42:42,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:42:42,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1262382070, now seen corresponding path program 3 times [2024-11-14 05:42:42,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:42:42,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932502859] [2024-11-14 05:42:42,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:42:42,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:42:42,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:42:44,434 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 11 proven. 19 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-14 05:42:44,434 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:42:44,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932502859] [2024-11-14 05:42:44,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932502859] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:42:44,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127715852] [2024-11-14 05:42:44,434 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:42:44,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:42:44,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:42:44,439 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:42:44,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-14 05:42:44,550 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:42:44,550 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:42:44,552 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-14 05:42:44,557 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:42:45,156 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 9 proven. 22 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-14 05:42:45,156 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:42:46,514 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:42:46,515 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 33 treesize of output 23 [2024-11-14 05:43:21,875 WARN L286 SmtUtils]: Spent 6.01s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-14 05:43:31,951 WARN L286 SmtUtils]: Spent 6.01s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-14 05:43:37,965 WARN L286 SmtUtils]: Spent 6.01s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-14 05:43:50,008 WARN L286 SmtUtils]: Spent 6.01s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-14 05:44:22,271 WARN L286 SmtUtils]: Spent 6.01s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-14 05:44:28,283 WARN L286 SmtUtils]: Spent 6.01s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-14 05:44:34,301 WARN L286 SmtUtils]: Spent 6.01s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-14 05:44:44,332 WARN L286 SmtUtils]: Spent 6.01s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-14 05:45:00,381 WARN L286 SmtUtils]: Spent 6.01s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-14 05:45:39,086 WARN L286 SmtUtils]: Spent 6.01s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-14 05:46:01,289 WARN L286 SmtUtils]: Spent 6.01s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-14 05:47:05,621 WARN L286 SmtUtils]: Spent 6.01s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-14 05:47:11,682 WARN L286 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-14 05:47:17,694 WARN L286 SmtUtils]: Spent 6.01s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-14 05:47:29,736 WARN L286 SmtUtils]: Spent 6.01s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-14 05:47:58,026 WARN L286 SmtUtils]: Spent 6.01s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-14 05:48:04,039 WARN L286 SmtUtils]: Spent 6.01s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-14 05:48:18,121 WARN L286 SmtUtils]: Spent 6.01s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-14 05:49:00,519 WARN L286 SmtUtils]: Spent 6.01s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-14 05:49:06,536 WARN L286 SmtUtils]: Spent 6.01s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-14 05:49:22,588 WARN L286 SmtUtils]: Spent 6.01s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-14 05:50:05,903 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:50:05,903 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 414 treesize of output 298 [2024-11-14 05:50:11,846 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:50:11,846 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 39 treesize of output 31 [2024-11-14 05:50:37,387 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:50:37,388 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 402 treesize of output 306 [2024-11-14 05:51:03,911 WARN L286 SmtUtils]: Spent 5.05s on a formula simplification that was a NOOP. DAG size: 188 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 05:51:24,346 WARN L286 SmtUtils]: Spent 5.25s on a formula simplification. DAG size of input: 53 DAG size of output: 44 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 05:51:35,257 WARN L286 SmtUtils]: Spent 5.08s on a formula simplification that was a NOOP. DAG size: 95 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 05:51:35,450 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:51:35,451 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 483 treesize of output 367 [2024-11-14 05:51:46,247 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 35 refuted. 1 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-14 05:51:46,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127715852] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:51:46,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1570965914] [2024-11-14 05:51:46,251 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2024-11-14 05:51:46,251 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:51:46,251 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:51:46,252 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:51:46,252 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:51:56,065 INFO L197 IcfgInterpreter]: Interpreting procedure rangesum with input of size 1 for LOIs [2024-11-14 05:51:56,255 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:51:56,297 WARN L873 $PredicateComparison]: unable to prove that (and (exists ((|v_#memory_int_66| (Array Int (Array Int Int)))) (= |c_#memory_int| (store |v_#memory_int_66| |c_ULTIMATE.start_main_~#x~0#1.base| (let ((.cse0 (+ (* c_~N~0 4) (- 4) |c_ULTIMATE.start_main_~#x~0#1.offset|))) (store (select |v_#memory_int_66| |c_ULTIMATE.start_main_~#x~0#1.base|) .cse0 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#x~0#1.base|) .cse0)))))) (exists ((v_rangesum_~cnt~0_121 Int) (|v_ULTIMATE.start_main_~ret2~0#1_26| Int) (|v_ULTIMATE.start_main_~ret~1#1_26| Int) (v_rangesum_~ret~0_125 Int) (v_rangesum_~i~1_112 Int) (|v_ULTIMATE.start_main_~ret5~0#1_26| Int)) (let ((.cse1 (= v_rangesum_~cnt~0_121 0)) (.cse18 (<= 0 v_rangesum_~cnt~0_121))) (and (<= 0 (+ |v_ULTIMATE.start_main_~ret~1#1_26| 2147483648)) (<= c_~N~0 v_rangesum_~i~1_112) (or (and (= |v_ULTIMATE.start_main_~ret5~0#1_26| 0) .cse1) (and (not .cse1) (let ((.cse23 (div v_rangesum_~ret~0_125 v_rangesum_~cnt~0_121))) (let ((.cse22 (+ |v_ULTIMATE.start_main_~ret5~0#1_26| 4294967296)) (.cse25 (mod .cse23 4294967296))) (let ((.cse33 (= .cse22 .cse25)) (.cse34 (= (mod v_rangesum_~ret~0_125 v_rangesum_~cnt~0_121) 0)) (.cse31 (+ v_rangesum_~ret~0_125 1)) (.cse35 (= |v_ULTIMATE.start_main_~ret5~0#1_26| .cse25)) (.cse32 (<= (+ v_rangesum_~cnt~0_121 1) 0)) (.cse24 (mod (+ 4294967295 .cse23) 4294967296))) (let ((.cse10 (and .cse32 (= .cse24 |v_ULTIMATE.start_main_~ret5~0#1_26|))) (.cse28 (and .cse32 .cse35)) (.cse27 (and .cse18 .cse35)) (.cse26 (or .cse34 (< 0 .cse31))) (.cse30 (and .cse33 .cse32)) (.cse8 (not .cse34)) (.cse29 (and .cse33 .cse18)) (.cse17 (and .cse32 (= .cse24 .cse22))) (.cse9 (<= .cse31 0))) (let ((.cse16 (and .cse26 (or .cse29 .cse30 (and .cse8 (or .cse29 .cse17) .cse9)))) (.cse14 (and .cse26 (or (and (or .cse17 .cse27) .cse8 .cse9) .cse28 .cse27))) (.cse13 (<= 2147483648 .cse24)) (.cse4 (and .cse26 (or (and (or .cse29 .cse10) .cse8 .cse9) .cse29 .cse30))) (.cse5 (<= 2147483648 .cse25)) (.cse6 (and .cse26 (or (and (or .cse27 .cse10) .cse8 .cse9) .cse28 .cse27))) (.cse7 (<= .cse25 2147483647)) (.cse12 (<= .cse24 2147483647)) (.cse2 (mod (+ .cse23 1) 4294967296))) (or (and (<= .cse2 2147483647) (let ((.cse11 (and (= .cse2 |v_ULTIMATE.start_main_~ret5~0#1_26|) .cse18))) (or (and (let ((.cse3 (and .cse8 .cse9 (or .cse10 .cse11)))) (or (and (or .cse3 .cse4) .cse5) (and (or .cse6 .cse3) .cse7))) .cse12) (and .cse13 (let ((.cse15 (and .cse8 .cse9 (or .cse17 .cse11)))) (or (and .cse7 (or .cse14 .cse15)) (and .cse5 (or .cse16 .cse15)))))))) (and (let ((.cse20 (and .cse18 (= .cse2 .cse22)))) (or (and (let ((.cse19 (and (or .cse20 .cse17) .cse8 .cse9))) (or (and (or .cse16 .cse19) .cse5) (and .cse7 (or .cse14 .cse19)))) .cse13) (and (let ((.cse21 (and (or .cse20 .cse10) .cse8 .cse9))) (or (and (or .cse21 .cse4) .cse5) (and (or .cse6 .cse21) .cse7))) .cse12))) (<= 2147483648 .cse2)))))))))) (<= |v_ULTIMATE.start_main_~ret~1#1_26| 2147483647) (or (not (= |v_ULTIMATE.start_main_~ret~1#1_26| |v_ULTIMATE.start_main_~ret5~0#1_26|)) (not (= |v_ULTIMATE.start_main_~ret2~0#1_26| |v_ULTIMATE.start_main_~ret~1#1_26|))) (<= |v_ULTIMATE.start_main_~ret2~0#1_26| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main_~ret5~0#1_26| 2147483648)) (<= 0 (+ |v_ULTIMATE.start_main_~ret2~0#1_26| 2147483648)) (<= |v_ULTIMATE.start_main_~ret5~0#1_26| 2147483647) (let ((.cse36 (<= 0 v_rangesum_~i~1_112))) (or (and (= v_rangesum_~ret~0_125 0) .cse36 .cse1) (and .cse18 .cse36))))))) is different from true [2024-11-14 05:52:00,670 WARN L873 $PredicateComparison]: unable to prove that (exists ((v_rangesum_~ret~0_130 Int) (v_rangesum_~cnt~0_126 Int) (v_rangesum_~i~1_117 Int)) (let ((.cse2 (<= 0 v_rangesum_~cnt~0_126)) (.cse0 (= v_rangesum_~cnt~0_126 0))) (and (<= c_~N~0 v_rangesum_~i~1_117) (let ((.cse1 (<= 0 v_rangesum_~i~1_117))) (or (and .cse0 .cse1 (= v_rangesum_~ret~0_130 0)) (and .cse2 .cse1))) (or (and (let ((.cse22 (div v_rangesum_~ret~0_130 v_rangesum_~cnt~0_126))) (let ((.cse19 (+ |c_rangesum_#res| 4294967296)) (.cse27 (mod .cse22 4294967296))) (let ((.cse23 (mod (+ .cse22 4294967295) 4294967296)) (.cse28 (= .cse27 |c_rangesum_#res|)) (.cse26 (+ v_rangesum_~ret~0_130 1)) (.cse25 (= (mod v_rangesum_~ret~0_130 v_rangesum_~cnt~0_126) 0)) (.cse24 (<= (+ v_rangesum_~cnt~0_126 1) 0)) (.cse29 (= .cse27 .cse19))) (let ((.cse11 (<= 2147483648 .cse27)) (.cse13 (and .cse29 .cse2)) (.cse12 (and .cse29 .cse24)) (.cse3 (or (< 0 .cse26) .cse25)) (.cse4 (and .cse28 .cse24)) (.cse8 (and .cse2 .cse28)) (.cse10 (<= .cse27 2147483647)) (.cse5 (<= .cse26 0)) (.cse6 (not .cse25)) (.cse14 (and (= .cse19 .cse23) .cse24)) (.cse15 (<= 2147483648 .cse23)) (.cse16 (<= .cse23 2147483647)) (.cse17 (and (= .cse23 |c_rangesum_#res|) .cse24)) (.cse18 (mod (+ .cse22 1) 4294967296))) (or (and (let ((.cse7 (and .cse2 (= .cse18 .cse19)))) (let ((.cse9 (and (or (and (or .cse14 .cse7) .cse15) (and .cse16 (or .cse7 .cse17))) .cse5 .cse6))) (or (and (or (and .cse3 (or .cse4 (and .cse5 .cse6 (or .cse4 .cse7)) .cse8)) .cse9) .cse10) (and .cse11 (or .cse9 (and .cse3 (or (and (or .cse7 .cse12) .cse5 .cse6) .cse13 .cse12))))))) (<= 2147483648 .cse18)) (and (let ((.cse20 (and .cse2 (= .cse18 |c_rangesum_#res|)))) (let ((.cse21 (and .cse5 .cse6 (or (and (or .cse14 .cse20) .cse15) (and .cse16 (or .cse20 .cse17)))))) (or (and .cse11 (or (and .cse3 (or (and .cse5 .cse6 (or .cse20 .cse12)) .cse13 .cse12)) .cse21)) (and (or (and .cse3 (or .cse4 (and .cse5 .cse6 (or .cse4 .cse20)) .cse8)) .cse21) .cse10)))) (<= .cse18 2147483647))))))) (not .cse0)) (and .cse0 (= |c_rangesum_#res| 0)))))) is different from true [2024-11-14 05:52:57,695 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-11-14 05:52:57,696 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 101 [2024-11-14 05:52:57,696 FATAL L? ?]: Ignoring exception! de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:281) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.checkRedundancy(SimplifyDDA2.java:275) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convertForPreprocessedInputTerms(SimplifyDDA2.java:499) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:484) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.simplify(SimplifyDDA2.java:590) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:245) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:192) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:388) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:323) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.generateInterpolants(SifaRunner.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:118) 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:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:276) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) 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$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 47 more [2024-11-14 05:52:57,699 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:52:57,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 17] total 30 [2024-11-14 05:52:57,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921932684] [2024-11-14 05:52:57,700 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:52:57,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-14 05:52:57,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:52:57,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-14 05:52:57,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=956, Unknown=9, NotChecked=130, Total=1260 [2024-11-14 05:52:57,703 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 30 states, 27 states have (on average 1.5185185185185186) internal successors, (41), 26 states have internal predecessors, (41), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-14 05:52:57,704 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 42 SyntacticMatches, 14 SemanticMatches, 34 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 611 ImplicationChecksByTransitivity, 57.4s TimeCoverageRelationStatistics Valid=165, Invalid=956, Unknown=9, NotChecked=130, Total=1260 [2024-11-14 05:52:57,705 INFO L432 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 05:52:57,705 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 05:52:57,727 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-14 05:52:57,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:52:57,910 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:177) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:138) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertCodeBlock(IncrementalHoareTripleChecker.java:436) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:278) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:284) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.releaseLock(ChainingHoareTripleChecker.java:449) at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1708) at java.base/java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:762) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.releaseLock(ChainingHoareTripleChecker.java:98) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:159) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.computeAutomataDifference(NwaCegarLoop.java:385) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.refineAbstraction(NwaCegarLoop.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:276) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) 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) Caused by: java.io.IOException: Stream closed at java.base/java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:447) at java.base/java.io.OutputStream.write(OutputStream.java:167) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:125) at java.base/java.io.BufferedOutputStream.implFlush(BufferedOutputStream.java:252) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:246) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:412) at java.base/sun.nio.cs.StreamEncoder.lockedFlush(StreamEncoder.java:214) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:201) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:262) at java.base/java.io.BufferedWriter.implFlush(BufferedWriter.java:372) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:359) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:175) ... 36 more [2024-11-14 05:52:57,914 INFO L158 Benchmark]: Toolchain (without parser) took 658347.06ms. Allocated memory was 117.4MB in the beginning and 645.9MB in the end (delta: 528.5MB). Free memory was 92.4MB in the beginning and 539.1MB in the end (delta: -446.6MB). Peak memory consumption was 78.6MB. Max. memory is 16.1GB. [2024-11-14 05:52:57,914 INFO L158 Benchmark]: CDTParser took 1.77ms. Allocated memory is still 117.4MB. Free memory is still 74.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 05:52:57,914 INFO L158 Benchmark]: CACSL2BoogieTranslator took 337.31ms. Allocated memory is still 117.4MB. Free memory was 92.3MB in the beginning and 81.0MB in the end (delta: 11.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 05:52:57,914 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.25ms. Allocated memory is still 117.4MB. Free memory was 81.0MB in the beginning and 79.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 05:52:57,915 INFO L158 Benchmark]: Boogie Preprocessor took 49.18ms. Allocated memory is still 117.4MB. Free memory was 79.7MB in the beginning and 78.7MB in the end (delta: 954.0kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 05:52:57,915 INFO L158 Benchmark]: RCFGBuilder took 518.52ms. Allocated memory is still 117.4MB. Free memory was 78.7MB in the beginning and 63.0MB in the end (delta: 15.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 05:52:57,915 INFO L158 Benchmark]: TraceAbstraction took 657383.40ms. Allocated memory was 117.4MB in the beginning and 645.9MB in the end (delta: 528.5MB). Free memory was 62.6MB in the beginning and 539.1MB in the end (delta: -476.5MB). Peak memory consumption was 45.0MB. Max. memory is 16.1GB. [2024-11-14 05:52:57,918 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.77ms. Allocated memory is still 117.4MB. Free memory is still 74.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 337.31ms. Allocated memory is still 117.4MB. Free memory was 92.3MB in the beginning and 81.0MB in the end (delta: 11.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.25ms. Allocated memory is still 117.4MB. Free memory was 81.0MB in the beginning and 79.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 49.18ms. Allocated memory is still 117.4MB. Free memory was 79.7MB in the beginning and 78.7MB in the end (delta: 954.0kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 518.52ms. Allocated memory is still 117.4MB. Free memory was 78.7MB in the beginning and 63.0MB in the end (delta: 15.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 657383.40ms. Allocated memory was 117.4MB in the beginning and 645.9MB in the end (delta: 528.5MB). Free memory was 62.6MB in the beginning and 539.1MB in the end (delta: -476.5MB). Peak memory consumption was 45.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/reducercommutativity/rangesum.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E --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 4dc91bf2fc8981aab63c1ee768384f1c8f580edfe4618d65089a78f799b6ddb8 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 05:53:00,620 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 05:53:00,749 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2024-11-14 05:53:00,762 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 05:53:00,763 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 05:53:00,822 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 05:53:00,825 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 05:53:00,825 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 05:53:00,825 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 05:53:00,826 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 05:53:00,826 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 05:53:00,826 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 05:53:00,826 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 05:53:00,826 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 05:53:00,826 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 05:53:00,826 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 05:53:00,827 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 05:53:00,827 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 05:53:00,827 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 05:53:00,827 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 05:53:00,827 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 05:53:00,827 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 05:53:00,828 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 05:53:00,828 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 05:53:00,828 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-14 05:53:00,828 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-14 05:53:00,831 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 05:53:00,831 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-14 05:53:00,831 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 05:53:00,832 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 05:53:00,832 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 05:53:00,832 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 05:53:00,832 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-14 05:53:00,832 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 05:53:00,832 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 05:53:00,834 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:53:00,834 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 05:53:00,834 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 05:53:00,834 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 05:53:00,835 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-14 05:53:00,835 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-14 05:53:00,835 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 05:53:00,835 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 05:53:00,835 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E 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 -> 4dc91bf2fc8981aab63c1ee768384f1c8f580edfe4618d65089a78f799b6ddb8 [2024-11-14 05:53:01,261 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 05:53:01,272 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 05:53:01,275 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 05:53:01,276 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 05:53:01,277 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 05:53:01,279 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/reducercommutativity/rangesum.i Unable to find full path for "g++" [2024-11-14 05:53:03,451 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 05:53:03,705 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 05:53:03,705 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/sv-benchmarks/c/reducercommutativity/rangesum.i [2024-11-14 05:53:03,729 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/data/11f82c847/78585256fe634f36ac3e502e4b3ebae3/FLAGcefa45809 [2024-11-14 05:53:03,758 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/data/11f82c847/78585256fe634f36ac3e502e4b3ebae3 [2024-11-14 05:53:03,760 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 05:53:03,762 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 05:53:03,763 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 05:53:03,764 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 05:53:03,768 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 05:53:03,769 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:53:03" (1/1) ... [2024-11-14 05:53:03,770 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f1f1876 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:53:03, skipping insertion in model container [2024-11-14 05:53:03,770 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:53:03" (1/1) ... [2024-11-14 05:53:03,786 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 05:53:03,989 WARN L250 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_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/sv-benchmarks/c/reducercommutativity/rangesum.i[1544,1557] [2024-11-14 05:53:03,993 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:53:04,007 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 05:53:04,046 WARN L250 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_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/sv-benchmarks/c/reducercommutativity/rangesum.i[1544,1557] [2024-11-14 05:53:04,047 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:53:04,067 INFO L204 MainTranslator]: Completed translation [2024-11-14 05:53:04,068 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:53:04 WrapperNode [2024-11-14 05:53:04,069 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 05:53:04,071 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 05:53:04,071 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 05:53:04,072 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 05:53:04,078 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:53:04" (1/1) ... [2024-11-14 05:53:04,089 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:53:04" (1/1) ... [2024-11-14 05:53:04,111 INFO L138 Inliner]: procedures = 19, calls = 22, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 69 [2024-11-14 05:53:04,113 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 05:53:04,114 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 05:53:04,114 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 05:53:04,114 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 05:53:04,123 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:53:04" (1/1) ... [2024-11-14 05:53:04,123 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:53:04" (1/1) ... [2024-11-14 05:53:04,126 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:53:04" (1/1) ... [2024-11-14 05:53:04,128 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:53:04" (1/1) ... [2024-11-14 05:53:04,138 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:53:04" (1/1) ... [2024-11-14 05:53:04,147 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:53:04" (1/1) ... [2024-11-14 05:53:04,150 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:53:04" (1/1) ... [2024-11-14 05:53:04,151 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:53:04" (1/1) ... [2024-11-14 05:53:04,157 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 05:53:04,158 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 05:53:04,158 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 05:53:04,159 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 05:53:04,160 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:53:04" (1/1) ... [2024-11-14 05:53:04,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:53:04,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:53:04,197 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 05:53:04,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 05:53:04,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 05:53:04,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-14 05:53:04,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-14 05:53:04,225 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2024-11-14 05:53:04,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 05:53:04,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 05:53:04,226 INFO L130 BoogieDeclarations]: Found specification of procedure rangesum [2024-11-14 05:53:04,226 INFO L138 BoogieDeclarations]: Found implementation of procedure rangesum [2024-11-14 05:53:04,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-14 05:53:04,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2024-11-14 05:53:04,328 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 05:53:04,330 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 05:53:04,950 INFO L? ?]: Removed 18 outVars from TransFormulas that were not future-live. [2024-11-14 05:53:04,951 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 05:53:04,965 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 05:53:04,966 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-14 05:53:04,966 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:53:04 BoogieIcfgContainer [2024-11-14 05:53:04,966 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 05:53:04,972 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 05:53:04,972 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 05:53:04,979 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 05:53:04,980 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 05:53:03" (1/3) ... [2024-11-14 05:53:04,980 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a839b51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:53:04, skipping insertion in model container [2024-11-14 05:53:04,980 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:53:04" (2/3) ... [2024-11-14 05:53:04,981 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a839b51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:53:04, skipping insertion in model container [2024-11-14 05:53:04,981 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:53:04" (3/3) ... [2024-11-14 05:53:04,982 INFO L112 eAbstractionObserver]: Analyzing ICFG rangesum.i [2024-11-14 05:53:04,995 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 05:53:04,996 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG rangesum.i that has 2 procedures, 28 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2024-11-14 05:53:05,044 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 05:53:05,058 INFO L333 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, 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;@235664f4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 05:53:05,058 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 05:53:05,062 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 22 states have (on average 1.5) internal successors, (33), 23 states have internal predecessors, (33), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 05:53:05,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-14 05:53:05,071 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:53:05,072 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:53:05,072 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:53:05,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:53:05,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1707018522, now seen corresponding path program 1 times [2024-11-14 05:53:05,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:53:05,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1831781165] [2024-11-14 05:53:05,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:53:05,087 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:53:05,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:53:05,089 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 05:53:05,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-14 05:53:05,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:53:05,514 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-14 05:53:05,519 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:53:05,543 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-14 05:53:05,544 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:53:05,544 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:53:05,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1831781165] [2024-11-14 05:53:05,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1831781165] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:53:05,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:53:05,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 05:53:05,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185806515] [2024-11-14 05:53:05,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:53:05,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-14 05:53:05,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:53:05,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-14 05:53:05,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-14 05:53:05,572 INFO L87 Difference]: Start difference. First operand has 28 states, 22 states have (on average 1.5) internal successors, (33), 23 states have internal predecessors, (33), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 05:53:05,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:53:05,591 INFO L93 Difference]: Finished difference Result 52 states and 74 transitions. [2024-11-14 05:53:05,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-14 05:53:05,594 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 30 [2024-11-14 05:53:05,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:53:05,600 INFO L225 Difference]: With dead ends: 52 [2024-11-14 05:53:05,600 INFO L226 Difference]: Without dead ends: 23 [2024-11-14 05:53:05,604 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-14 05:53:05,609 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 05:53:05,611 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 05:53:05,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-14 05:53:05,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-11-14 05:53:05,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 05:53:05,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 29 transitions. [2024-11-14 05:53:05,646 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 29 transitions. Word has length 30 [2024-11-14 05:53:05,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:53:05,647 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 29 transitions. [2024-11-14 05:53:05,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 05:53:05,647 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 29 transitions. [2024-11-14 05:53:05,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-14 05:53:05,649 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:53:05,649 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:53:05,664 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-11-14 05:53:05,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:53:05,850 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:53:05,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:53:05,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1928744123, now seen corresponding path program 1 times [2024-11-14 05:53:05,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:53:05,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [632329189] [2024-11-14 05:53:05,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:53:05,851 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:53:05,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:53:05,855 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 05:53:05,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-11-14 05:53:06,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:53:06,279 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-14 05:53:06,281 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:53:06,325 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-14 05:53:06,325 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:53:06,325 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:53:06,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [632329189] [2024-11-14 05:53:06,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [632329189] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:53:06,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:53:06,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 05:53:06,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195718678] [2024-11-14 05:53:06,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:53:06,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:53:06,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:53:06,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:53:06,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:53:06,331 INFO L87 Difference]: Start difference. First operand 23 states and 29 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 05:53:06,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:53:06,479 INFO L93 Difference]: Finished difference Result 44 states and 60 transitions. [2024-11-14 05:53:06,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:53:06,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2024-11-14 05:53:06,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:53:06,532 INFO L225 Difference]: With dead ends: 44 [2024-11-14 05:53:06,532 INFO L226 Difference]: Without dead ends: 27 [2024-11-14 05:53:06,532 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:53:06,533 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 3 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:53:06,534 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 52 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:53:06,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-14 05:53:06,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-11-14 05:53:06,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 22 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 05:53:06,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2024-11-14 05:53:06,543 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 30 [2024-11-14 05:53:06,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:53:06,544 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2024-11-14 05:53:06,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 05:53:06,544 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2024-11-14 05:53:06,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-14 05:53:06,545 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:53:06,545 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:53:06,556 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-11-14 05:53:06,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:53:06,746 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:53:06,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:53:06,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1426868794, now seen corresponding path program 1 times [2024-11-14 05:53:06,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:53:06,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1710073941] [2024-11-14 05:53:06,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:53:06,747 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:53:06,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:53:06,750 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 05:53:06,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-11-14 05:53:06,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:53:06,836 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-14 05:53:06,839 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:53:07,316 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-14 05:53:07,316 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:53:07,316 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:53:07,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1710073941] [2024-11-14 05:53:07,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1710073941] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:53:07,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:53:07,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-14 05:53:07,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622715712] [2024-11-14 05:53:07,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:53:07,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-14 05:53:07,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:53:07,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-14 05:53:07,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-14 05:53:07,319 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 6 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 05:53:07,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:53:07,539 INFO L93 Difference]: Finished difference Result 47 states and 64 transitions. [2024-11-14 05:53:07,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-14 05:53:07,540 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 6 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 30 [2024-11-14 05:53:07,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:53:07,542 INFO L225 Difference]: With dead ends: 47 [2024-11-14 05:53:07,542 INFO L226 Difference]: Without dead ends: 43 [2024-11-14 05:53:07,542 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-14 05:53:07,543 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 9 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:53:07,543 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 156 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 05:53:07,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-14 05:53:07,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 35. [2024-11-14 05:53:07,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 28 states have internal predecessors, (35), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-14 05:53:07,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 49 transitions. [2024-11-14 05:53:07,558 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 49 transitions. Word has length 30 [2024-11-14 05:53:07,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:53:07,558 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 49 transitions. [2024-11-14 05:53:07,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 6 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 05:53:07,558 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 49 transitions. [2024-11-14 05:53:07,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-14 05:53:07,559 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:53:07,560 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:53:07,563 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-11-14 05:53:07,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:53:07,762 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:53:07,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:53:07,763 INFO L85 PathProgramCache]: Analyzing trace with hash -300915741, now seen corresponding path program 1 times [2024-11-14 05:53:07,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:53:07,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [462466148] [2024-11-14 05:53:07,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:53:07,763 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:53:07,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:53:07,767 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 05:53:07,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-11-14 05:53:07,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:53:07,969 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 05:53:07,971 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:53:08,131 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-14 05:53:08,131 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:53:08,131 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:53:08,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [462466148] [2024-11-14 05:53:08,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [462466148] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:53:08,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:53:08,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 05:53:08,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2249023] [2024-11-14 05:53:08,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:53:08,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 05:53:08,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:53:08,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 05:53:08,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:53:08,132 INFO L87 Difference]: Start difference. First operand 35 states and 49 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 05:53:08,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:53:08,265 INFO L93 Difference]: Finished difference Result 67 states and 103 transitions. [2024-11-14 05:53:08,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 05:53:08,267 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 33 [2024-11-14 05:53:08,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:53:08,268 INFO L225 Difference]: With dead ends: 67 [2024-11-14 05:53:08,268 INFO L226 Difference]: Without dead ends: 38 [2024-11-14 05:53:08,269 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:53:08,270 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 14 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:53:08,270 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 28 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:53:08,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-14 05:53:08,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2024-11-14 05:53:08,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 30 states have internal predecessors, (37), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-14 05:53:08,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 51 transitions. [2024-11-14 05:53:08,285 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 51 transitions. Word has length 33 [2024-11-14 05:53:08,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:53:08,286 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 51 transitions. [2024-11-14 05:53:08,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 05:53:08,286 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 51 transitions. [2024-11-14 05:53:08,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-14 05:53:08,288 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:53:08,288 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:53:08,296 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-11-14 05:53:08,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:53:08,489 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:53:08,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:53:08,490 INFO L85 PathProgramCache]: Analyzing trace with hash -939965785, now seen corresponding path program 1 times [2024-11-14 05:53:08,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:53:08,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1450824034] [2024-11-14 05:53:08,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:53:08,490 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:53:08,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:53:08,492 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 05:53:08,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-11-14 05:53:08,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:53:08,700 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 05:53:08,702 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:53:08,973 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-14 05:53:08,973 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:53:09,323 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-14 05:53:09,324 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:53:09,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1450824034] [2024-11-14 05:53:09,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1450824034] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:53:09,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1109765432] [2024-11-14 05:53:09,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:53:09,325 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:53:09,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:53:09,329 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:53:09,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2024-11-14 05:53:10,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:53:10,040 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 05:53:10,042 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:53:10,109 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-14 05:53:10,109 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:53:10,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1109765432] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:53:10,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-14 05:53:10,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 6] total 9 [2024-11-14 05:53:10,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782817098] [2024-11-14 05:53:10,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:53:10,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:53:10,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:53:10,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:53:10,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-14 05:53:10,117 INFO L87 Difference]: Start difference. First operand 37 states and 51 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 05:53:10,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:53:10,204 INFO L93 Difference]: Finished difference Result 71 states and 99 transitions. [2024-11-14 05:53:10,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:53:10,205 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 42 [2024-11-14 05:53:10,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:53:10,207 INFO L225 Difference]: With dead ends: 71 [2024-11-14 05:53:10,207 INFO L226 Difference]: Without dead ends: 38 [2024-11-14 05:53:10,207 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-14 05:53:10,208 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:53:10,209 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:53:10,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-14 05:53:10,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2024-11-14 05:53:10,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 31 states have internal predecessors, (38), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-14 05:53:10,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 52 transitions. [2024-11-14 05:53:10,220 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 52 transitions. Word has length 42 [2024-11-14 05:53:10,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:53:10,220 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 52 transitions. [2024-11-14 05:53:10,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 05:53:10,221 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 52 transitions. [2024-11-14 05:53:10,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-14 05:53:10,222 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:53:10,222 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:53:10,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2024-11-14 05:53:10,428 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2024-11-14 05:53:10,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt [2024-11-14 05:53:10,624 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:53:10,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:53:10,624 INFO L85 PathProgramCache]: Analyzing trace with hash 322875262, now seen corresponding path program 1 times [2024-11-14 05:53:10,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:53:10,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [799935394] [2024-11-14 05:53:10,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:53:10,625 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:53:10,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:53:10,628 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 05:53:10,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-11-14 05:53:10,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:53:10,844 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 05:53:10,845 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:53:11,104 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-14 05:53:11,105 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:53:11,493 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-14 05:53:11,493 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:53:11,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [799935394] [2024-11-14 05:53:11,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [799935394] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:53:11,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1557149241] [2024-11-14 05:53:11,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:53:11,493 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:53:11,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:53:11,495 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:53:11,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2024-11-14 05:53:12,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:53:12,242 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 05:53:12,244 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:53:12,363 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-14 05:53:12,365 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:53:12,527 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-14 05:53:12,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1557149241] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:53:12,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537434657] [2024-11-14 05:53:12,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:53:12,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:53:12,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:53:12,531 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:53:12,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-14 05:53:12,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:53:12,921 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 05:53:12,924 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:53:12,957 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-14 05:53:12,957 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:53:13,013 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-14 05:53:13,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537434657] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:53:13,014 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 05:53:13,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 4, 4, 4, 4] total 12 [2024-11-14 05:53:13,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681044588] [2024-11-14 05:53:13,015 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 05:53:13,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-14 05:53:13,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:53:13,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-14 05:53:13,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-11-14 05:53:13,017 INFO L87 Difference]: Start difference. First operand 38 states and 52 transitions. Second operand has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 2 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-14 05:53:13,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:53:13,618 INFO L93 Difference]: Finished difference Result 77 states and 116 transitions. [2024-11-14 05:53:13,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-14 05:53:13,621 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 2 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 43 [2024-11-14 05:53:13,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:53:13,623 INFO L225 Difference]: With dead ends: 77 [2024-11-14 05:53:13,623 INFO L226 Difference]: Without dead ends: 44 [2024-11-14 05:53:13,624 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 241 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-14 05:53:13,628 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 9 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 05:53:13,629 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 65 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 05:53:13,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-14 05:53:13,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2024-11-14 05:53:13,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 35 states have internal predecessors, (42), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-14 05:53:13,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 56 transitions. [2024-11-14 05:53:13,651 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 56 transitions. Word has length 43 [2024-11-14 05:53:13,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:53:13,652 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 56 transitions. [2024-11-14 05:53:13,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 2 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-14 05:53:13,652 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 56 transitions. [2024-11-14 05:53:13,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-14 05:53:13,654 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:53:13,654 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:53:13,689 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-14 05:53:13,862 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2024-11-14 05:53:14,060 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2024-11-14 05:53:14,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt [2024-11-14 05:53:14,255 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:53:14,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:53:14,256 INFO L85 PathProgramCache]: Analyzing trace with hash -888253821, now seen corresponding path program 2 times [2024-11-14 05:53:14,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:53:14,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [565390832] [2024-11-14 05:53:14,256 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 05:53:14,256 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:53:14,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:53:14,258 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 05:53:14,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-11-14 05:53:14,535 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 05:53:14,535 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:53:14,553 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-14 05:53:14,555 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:53:15,385 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 61 proven. 8 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-14 05:53:15,386 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:53:16,592 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 59 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-14 05:53:16,593 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:53:16,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [565390832] [2024-11-14 05:53:16,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [565390832] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:53:16,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1895816303] [2024-11-14 05:53:16,593 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 05:53:16,593 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:53:16,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:53:16,596 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:53:16,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2024-11-14 05:53:17,840 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 05:53:17,840 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:53:17,842 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 05:53:17,845 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:53:18,288 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 56 proven. 3 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-14 05:53:18,289 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:53:18,951 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2024-11-14 05:53:18,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1895816303] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:53:18,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790054708] [2024-11-14 05:53:18,952 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 05:53:18,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:53:18,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:53:18,955 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:53:18,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-14 05:53:19,358 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 05:53:19,359 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:53:19,458 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-14 05:53:19,460 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:53:19,985 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 61 proven. 8 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-14 05:53:19,985 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:53:20,563 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 59 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-14 05:53:20,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790054708] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:53:20,563 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 05:53:20,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 7, 7, 9, 11] total 24 [2024-11-14 05:53:20,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563734625] [2024-11-14 05:53:20,564 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 05:53:20,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-14 05:53:20,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:53:20,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-14 05:53:20,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=412, Unknown=0, NotChecked=0, Total=552 [2024-11-14 05:53:20,566 INFO L87 Difference]: Start difference. First operand 42 states and 56 transitions. Second operand has 24 states, 24 states have (on average 3.2916666666666665) internal successors, (79), 24 states have internal predecessors, (79), 4 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-14 05:53:23,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:53:23,000 INFO L93 Difference]: Finished difference Result 139 states and 200 transitions. [2024-11-14 05:53:23,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-14 05:53:23,002 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.2916666666666665) internal successors, (79), 24 states have internal predecessors, (79), 4 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 53 [2024-11-14 05:53:23,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:53:23,004 INFO L225 Difference]: With dead ends: 139 [2024-11-14 05:53:23,004 INFO L226 Difference]: Without dead ends: 85 [2024-11-14 05:53:23,006 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=271, Invalid=785, Unknown=0, NotChecked=0, Total=1056 [2024-11-14 05:53:23,007 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 144 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:53:23,008 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 162 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-14 05:53:23,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-14 05:53:23,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 45. [2024-11-14 05:53:23,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 37 states have (on average 1.2162162162162162) internal successors, (45), 38 states have internal predecessors, (45), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-14 05:53:23,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 59 transitions. [2024-11-14 05:53:23,032 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 59 transitions. Word has length 53 [2024-11-14 05:53:23,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:53:23,033 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 59 transitions. [2024-11-14 05:53:23,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.2916666666666665) internal successors, (79), 24 states have internal predecessors, (79), 4 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-14 05:53:23,033 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 59 transitions. [2024-11-14 05:53:23,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-14 05:53:23,035 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:53:23,035 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:53:23,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-14 05:53:23,243 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2024-11-14 05:53:23,444 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (12)] Ended with exit code 0 [2024-11-14 05:53:23,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt [2024-11-14 05:53:23,636 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:53:23,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:53:23,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1689459363, now seen corresponding path program 1 times [2024-11-14 05:53:23,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:53:23,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1201616664] [2024-11-14 05:53:23,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:53:23,637 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:53:23,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:53:23,639 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 05:53:23,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2024-11-14 05:53:23,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:53:23,861 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-14 05:53:23,863 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:53:24,186 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 43 proven. 11 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-14 05:53:24,186 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:53:25,528 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 35 proven. 62 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-14 05:53:25,529 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:53:25,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1201616664] [2024-11-14 05:53:25,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1201616664] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:53:25,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1043902864] [2024-11-14 05:53:25,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:53:25,529 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:53:25,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:53:25,531 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:53:25,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2024-11-14 05:53:26,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:53:26,042 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-14 05:53:26,043 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:53:26,509 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 43 proven. 11 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-14 05:53:26,509 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:53:27,343 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-14 05:53:27,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1043902864] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:53:27,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858631024] [2024-11-14 05:53:27,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:53:27,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:53:27,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:53:27,346 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:53:27,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-14 05:53:27,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:53:27,631 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-14 05:53:27,633 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:53:28,732 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 63 proven. 6 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-14 05:53:28,732 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:53:30,333 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 59 proven. 8 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-14 05:53:30,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858631024] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:53:30,333 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 05:53:30,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 15, 10, 11, 9, 10] total 47 [2024-11-14 05:53:30,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125078061] [2024-11-14 05:53:30,334 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 05:53:30,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-14 05:53:30,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:53:30,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-14 05:53:30,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=403, Invalid=1759, Unknown=0, NotChecked=0, Total=2162 [2024-11-14 05:53:30,338 INFO L87 Difference]: Start difference. First operand 45 states and 59 transitions. Second operand has 47 states, 47 states have (on average 3.106382978723404) internal successors, (146), 47 states have internal predecessors, (146), 8 states have call successors, (15), 6 states have call predecessors, (15), 7 states have return successors, (16), 4 states have call predecessors, (16), 8 states have call successors, (16) [2024-11-14 05:53:33,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:53:33,378 INFO L93 Difference]: Finished difference Result 134 states and 203 transitions. [2024-11-14 05:53:33,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-14 05:53:33,380 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 3.106382978723404) internal successors, (146), 47 states have internal predecessors, (146), 8 states have call successors, (15), 6 states have call predecessors, (15), 7 states have return successors, (16), 4 states have call predecessors, (16), 8 states have call successors, (16) Word has length 55 [2024-11-14 05:53:33,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:53:33,382 INFO L225 Difference]: With dead ends: 134 [2024-11-14 05:53:33,382 INFO L226 Difference]: Without dead ends: 98 [2024-11-14 05:53:33,385 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 278 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1166 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=712, Invalid=2828, Unknown=0, NotChecked=0, Total=3540 [2024-11-14 05:53:33,386 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 114 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-14 05:53:33,386 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 263 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-14 05:53:33,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-14 05:53:33,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 90. [2024-11-14 05:53:33,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 75 states have (on average 1.1866666666666668) internal successors, (89), 78 states have internal predecessors, (89), 10 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (18), 9 states have call predecessors, (18), 10 states have call successors, (18) [2024-11-14 05:53:33,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 117 transitions. [2024-11-14 05:53:33,411 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 117 transitions. Word has length 55 [2024-11-14 05:53:33,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:53:33,411 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 117 transitions. [2024-11-14 05:53:33,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 3.106382978723404) internal successors, (146), 47 states have internal predecessors, (146), 8 states have call successors, (15), 6 states have call predecessors, (15), 7 states have return successors, (16), 4 states have call predecessors, (16), 8 states have call successors, (16) [2024-11-14 05:53:33,411 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 117 transitions. [2024-11-14 05:53:33,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-14 05:53:33,416 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:53:33,416 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 6, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:53:33,454 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-14 05:53:33,622 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (15)] Ended with exit code 0 [2024-11-14 05:53:33,824 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2024-11-14 05:53:34,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:53:34,017 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:53:34,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:53:34,018 INFO L85 PathProgramCache]: Analyzing trace with hash 2078802716, now seen corresponding path program 1 times [2024-11-14 05:53:34,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:53:34,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [553766459] [2024-11-14 05:53:34,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:53:34,019 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:53:34,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:53:34,023 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 05:53:34,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2024-11-14 05:53:34,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 05:53:34,716 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-14 05:53:35,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 05:53:35,477 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2024-11-14 05:53:35,477 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-14 05:53:35,478 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-14 05:53:35,510 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2024-11-14 05:53:35,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:53:35,690 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:53:35,777 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-14 05:53:35,783 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.11 05:53:35 BoogieIcfgContainer [2024-11-14 05:53:35,783 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-14 05:53:35,784 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-14 05:53:35,784 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-14 05:53:35,784 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-14 05:53:35,785 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:53:04" (3/4) ... [2024-11-14 05:53:35,786 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-14 05:53:35,851 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/witness.graphml [2024-11-14 05:53:35,851 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-14 05:53:35,852 INFO L158 Benchmark]: Toolchain (without parser) took 32090.03ms. Allocated memory is still 117.4MB. Free memory was 92.9MB in the beginning and 36.7MB in the end (delta: 56.2MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. [2024-11-14 05:53:35,852 INFO L158 Benchmark]: CDTParser took 0.49ms. Allocated memory is still 117.4MB. Free memory is still 84.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 05:53:35,852 INFO L158 Benchmark]: CACSL2BoogieTranslator took 306.42ms. Allocated memory is still 117.4MB. Free memory was 92.9MB in the beginning and 81.1MB in the end (delta: 11.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 05:53:35,852 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.88ms. Allocated memory is still 117.4MB. Free memory was 81.1MB in the beginning and 79.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 05:53:35,853 INFO L158 Benchmark]: Boogie Preprocessor took 43.44ms. Allocated memory is still 117.4MB. Free memory was 79.9MB in the beginning and 78.6MB in the end (delta: 1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 05:53:35,853 INFO L158 Benchmark]: RCFGBuilder took 808.08ms. Allocated memory is still 117.4MB. Free memory was 78.6MB in the beginning and 65.8MB in the end (delta: 12.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 05:53:35,856 INFO L158 Benchmark]: TraceAbstraction took 30811.72ms. Allocated memory is still 117.4MB. Free memory was 65.2MB in the beginning and 41.5MB in the end (delta: 23.8MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-11-14 05:53:35,856 INFO L158 Benchmark]: Witness Printer took 67.20ms. Allocated memory is still 117.4MB. Free memory was 41.5MB in the beginning and 36.7MB in the end (delta: 4.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 05:53:35,858 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49ms. Allocated memory is still 117.4MB. Free memory is still 84.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 306.42ms. Allocated memory is still 117.4MB. Free memory was 92.9MB in the beginning and 81.1MB in the end (delta: 11.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.88ms. Allocated memory is still 117.4MB. Free memory was 81.1MB in the beginning and 79.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 43.44ms. Allocated memory is still 117.4MB. Free memory was 79.9MB in the beginning and 78.6MB in the end (delta: 1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 808.08ms. Allocated memory is still 117.4MB. Free memory was 78.6MB in the beginning and 65.8MB in the end (delta: 12.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 30811.72ms. Allocated memory is still 117.4MB. Free memory was 65.2MB in the beginning and 41.5MB in the end (delta: 23.8MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 67.20ms. Allocated memory is still 117.4MB. Free memory was 41.5MB in the beginning and 36.7MB in the end (delta: 4.7MB). Peak memory consumption was 8.4MB. 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 - CounterExampleResult [Line: 64]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L15] int N; VAL [N=0] [L43] N = __VERIFIER_nondet_int() [L44] COND TRUE N > 1 [L45] int x[N]; [L46] CALL init_nondet(x) [L17] int i; [L18] i = 0 VAL [N=3, i=0, x={-2147483648:0}] [L18] COND TRUE i < N [L19] x[i] = __VERIFIER_nondet_int() [L18] i++ VAL [N=3, i=1, x={-2147483648:0}] [L18] COND TRUE i < N [L19] x[i] = __VERIFIER_nondet_int() [L18] i++ VAL [N=3, i=2, x={-2147483648:0}] [L18] COND TRUE i < N [L19] x[i] = __VERIFIER_nondet_int() [L18] i++ VAL [N=3, i=3, x={-2147483648:0}] [L18] COND FALSE !(i < N) VAL [N=3, x={-2147483648:0}] [L46] RET init_nondet(x) [L47] int temp; [L48] int ret; [L49] int ret2; [L50] int ret5; VAL [N=3, x={-2147483648:0}] [L52] CALL, EXPR rangesum(x) VAL [N=3, \old(x)={-2147483648:0}] [L25] int i; [L26] long long ret; [L27] ret = 0 [L28] int cnt = 0; [L29] i = 0 VAL [N=3, \old(x)={-2147483648:0}, cnt=0, i=0, ret=0, x={-2147483648:0}] [L29] COND TRUE i < N VAL [N=3, \old(x)={-2147483648:0}, cnt=0, i=0, ret=0, x={-2147483648:0}] [L30] COND FALSE !(i > N/2) VAL [N=3, \old(x)={-2147483648:0}, cnt=0, i=0, ret=0, x={-2147483648:0}] [L29] i++ VAL [N=3, \old(x)={-2147483648:0}, cnt=0, i=1, ret=0, x={-2147483648:0}] [L29] COND TRUE i < N VAL [N=3, \old(x)={-2147483648:0}, cnt=0, i=1, ret=0, x={-2147483648:0}] [L30] COND FALSE !(i > N/2) VAL [N=3, \old(x)={-2147483648:0}, cnt=0, i=1, ret=0, x={-2147483648:0}] [L29] i++ VAL [N=3, \old(x)={-2147483648:0}, cnt=0, i=2, ret=0, x={-2147483648:0}] [L29] COND TRUE i < N VAL [N=3, \old(x)={-2147483648:0}, cnt=0, i=2, ret=0, x={-2147483648:0}] [L30] COND TRUE i > N/2 [L31] EXPR x[i] [L31] ret = ret + x[i] [L32] cnt = cnt + 1 VAL [N=3, \old(x)={-2147483648:0}, cnt=1, i=2, ret=-2147483648, x={-2147483648:0}] [L29] i++ VAL [N=3, \old(x)={-2147483648:0}, cnt=1, i=3, ret=-2147483648, x={-2147483648:0}] [L29] COND FALSE !(i < N) VAL [N=3, \old(x)={-2147483648:0}, cnt=1, ret=-2147483648, x={-2147483648:0}] [L35] COND TRUE cnt !=0 [L36] return ret / cnt; VAL [N=3, \old(x)={-2147483648:0}, \result=-2147483648, x={-2147483648:0}] [L52] RET, EXPR rangesum(x) VAL [N=3, x={-2147483648:0}] [L52] ret = rangesum(x) [L54] EXPR x[0] [L54] temp=x[0] [L54] EXPR x[1] [L54] x[0] = x[1] [L54] x[1] = temp VAL [N=3, ret=-2147483648, x={-2147483648:0}] [L55] CALL, EXPR rangesum(x) VAL [N=3, \old(x)={-2147483648:0}] [L25] int i; [L26] long long ret; [L27] ret = 0 [L28] int cnt = 0; [L29] i = 0 VAL [N=3, \old(x)={-2147483648:0}, cnt=0, i=0, ret=0, x={-2147483648:0}] [L29] COND TRUE i < N VAL [N=3, \old(x)={-2147483648:0}, cnt=0, i=0, ret=0, x={-2147483648:0}] [L30] COND FALSE !(i > N/2) VAL [N=3, \old(x)={-2147483648:0}, cnt=0, i=0, ret=0, x={-2147483648:0}] [L29] i++ VAL [N=3, \old(x)={-2147483648:0}, cnt=0, i=1, ret=0, x={-2147483648:0}] [L29] COND TRUE i < N VAL [N=3, \old(x)={-2147483648:0}, cnt=0, i=1, ret=0, x={-2147483648:0}] [L30] COND FALSE !(i > N/2) VAL [N=3, \old(x)={-2147483648:0}, cnt=0, i=1, ret=0, x={-2147483648:0}] [L29] i++ VAL [N=3, \old(x)={-2147483648:0}, cnt=0, i=2, ret=0, x={-2147483648:0}] [L29] COND TRUE i < N VAL [N=3, \old(x)={-2147483648:0}, cnt=0, i=2, ret=0, x={-2147483648:0}] [L30] COND TRUE i > N/2 [L31] EXPR x[i] [L31] ret = ret + x[i] [L32] cnt = cnt + 1 VAL [N=3, \old(x)={-2147483648:0}, cnt=1, i=2, ret=-2147483648, x={-2147483648:0}] [L29] i++ VAL [N=3, \old(x)={-2147483648:0}, cnt=1, i=3, ret=-2147483648, x={-2147483648:0}] [L29] COND FALSE !(i < N) VAL [N=3, \old(x)={-2147483648:0}, cnt=1, ret=-2147483648, x={-2147483648:0}] [L35] COND TRUE cnt !=0 [L36] return ret / cnt; VAL [N=3, \old(x)={-2147483648:0}, \result=-2147483648, x={-2147483648:0}] [L55] RET, EXPR rangesum(x) VAL [N=3, ret=-2147483648, x={-2147483648:0}] [L55] ret2 = rangesum(x) [L56] EXPR x[0] [L56] temp=x[0] [L57] int i =0 ; VAL [N=3, i=0, ret2=-2147483648, ret=-2147483648, temp=-1, x={-2147483648:0}] [L57] COND TRUE i N/2) VAL [N=3, \old(x)={-2147483648:0}, cnt=0, i=0, ret=0, x={-2147483648:0}] [L29] i++ VAL [N=3, \old(x)={-2147483648:0}, cnt=0, i=1, ret=0, x={-2147483648:0}] [L29] COND TRUE i < N VAL [N=3, \old(x)={-2147483648:0}, cnt=0, i=1, ret=0, x={-2147483648:0}] [L30] COND FALSE !(i > N/2) VAL [N=3, \old(x)={-2147483648:0}, cnt=0, i=1, ret=0, x={-2147483648:0}] [L29] i++ VAL [N=3, \old(x)={-2147483648:0}, cnt=0, i=2, ret=0, x={-2147483648:0}] [L29] COND TRUE i < N VAL [N=3, \old(x)={-2147483648:0}, cnt=0, i=2, ret=0, x={-2147483648:0}] [L30] COND TRUE i > N/2 [L31] EXPR x[i] [L31] ret = ret + x[i] [L32] cnt = cnt + 1 VAL [N=3, \old(x)={-2147483648:0}, cnt=1, i=2, ret=-1, x={-2147483648:0}] [L29] i++ VAL [N=3, \old(x)={-2147483648:0}, cnt=1, i=3, ret=-1, x={-2147483648:0}] [L29] COND FALSE !(i < N) VAL [N=3, \old(x)={-2147483648:0}, cnt=1, ret=-1, x={-2147483648:0}] [L35] COND TRUE cnt !=0 [L36] return ret / cnt; VAL [N=3, \old(x)={-2147483648:0}, \result=-1, x={-2147483648:0}] [L61] RET, EXPR rangesum(x) VAL [N=3, ret2=-2147483648, ret=-2147483648, x={-2147483648:0}] [L61] ret5 = rangesum(x) [L63] COND TRUE ret != ret2 || ret !=ret5 VAL [N=3, x={-2147483648:0}] [L64] reach_error() VAL [N=3, x={-2147483648:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 30.7s, OverallIterations: 9, TraceHistogramMax: 9, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 6.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 297 SdHoareTripleChecker+Valid, 4.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 293 mSDsluCounter, 805 SdHoareTripleChecker+Invalid, 3.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 585 mSDsCounter, 70 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1245 IncrementalHoareTripleChecker+Invalid, 1315 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 70 mSolverCounterUnsat, 220 mSDtfsCounter, 1245 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1153 GetRequests, 1033 SyntacticMatches, 3 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1427 ImplicationChecksByTransitivity, 8.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=90occurred in iteration=8, InterpolantAutomatonStates: 76, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 59 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 5.8s SatisfiabilityAnalysisTime, 12.7s InterpolantComputationTime, 722 NumberOfCodeBlocks, 722 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 1130 ConstructedInterpolants, 0 QuantifiedInterpolants, 4161 SizeOfPredicates, 10 NumberOfNonLiveVariables, 1608 ConjunctsInSsa, 96 ConjunctsInUnsatCore, 25 InterpolantComputations, 5 PerfectInterpolantSequences, 1512/1722 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! [2024-11-14 05:53:35,898 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f8843-8efb-45e7-a4d5-16a20fcc80db/bin/utaipan-verify-sOmjnqqW8E/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