./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-ext3-properties/sll_circular_traversal-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1451976-f892-4aca-a42b-5f6e59437a0f/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1451976-f892-4aca-a42b-5f6e59437a0f/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1451976-f892-4aca-a42b-5f6e59437a0f/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1451976-f892-4aca-a42b-5f6e59437a0f/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-ext3-properties/sll_circular_traversal-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1451976-f892-4aca-a42b-5f6e59437a0f/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1451976-f892-4aca-a42b-5f6e59437a0f/bin/utaipan-verify-YMUCfTKeje --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 5b4659b27a54f579598b48dab11e67b47aff28d030592fa757cae575afffc3b5 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 06:25:16,162 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 06:25:16,230 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1451976-f892-4aca-a42b-5f6e59437a0f/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 06:25:16,235 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 06:25:16,236 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 06:25:16,274 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 06:25:16,274 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 06:25:16,279 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 06:25:16,280 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 06:25:16,280 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 06:25:16,280 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 06:25:16,281 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 06:25:16,281 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 06:25:16,282 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 06:25:16,282 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 06:25:16,282 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 06:25:16,283 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 06:25:16,283 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 06:25:16,283 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 06:25:16,284 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 06:25:16,284 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 06:25:16,288 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 06:25:16,289 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 06:25:16,289 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 06:25:16,289 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 06:25:16,290 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 06:25:16,290 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 06:25:16,290 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 06:25:16,291 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 06:25:16,291 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 06:25:16,291 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 06:25:16,292 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 06:25:16,292 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 06:25:16,292 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 06:25:16,293 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 06:25:16,293 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 06:25:16,293 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 06:25:16,294 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 06:25:16,294 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:25:16,294 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 06:25:16,295 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 06:25:16,295 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 06:25:16,295 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 06:25:16,296 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 06:25:16,296 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 06:25:16,296 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 06:25:16,296 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 06:25:16,296 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1451976-f892-4aca-a42b-5f6e59437a0f/bin/utaipan-verify-YMUCfTKeje/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1451976-f892-4aca-a42b-5f6e59437a0f/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b4659b27a54f579598b48dab11e67b47aff28d030592fa757cae575afffc3b5 [2024-11-09 06:25:16,544 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 06:25:16,568 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 06:25:16,571 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 06:25:16,574 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 06:25:16,574 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 06:25:16,576 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1451976-f892-4aca-a42b-5f6e59437a0f/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/list-ext3-properties/sll_circular_traversal-1.i Unable to find full path for "g++" [2024-11-09 06:25:18,817 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 06:25:19,059 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 06:25:19,059 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1451976-f892-4aca-a42b-5f6e59437a0f/sv-benchmarks/c/list-ext3-properties/sll_circular_traversal-1.i [2024-11-09 06:25:19,072 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1451976-f892-4aca-a42b-5f6e59437a0f/bin/utaipan-verify-YMUCfTKeje/data/119a180c8/30d94d383b2e4adbab01e8020b177789/FLAG68fc7c1c5 [2024-11-09 06:25:19,087 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1451976-f892-4aca-a42b-5f6e59437a0f/bin/utaipan-verify-YMUCfTKeje/data/119a180c8/30d94d383b2e4adbab01e8020b177789 [2024-11-09 06:25:19,090 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 06:25:19,092 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 06:25:19,093 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 06:25:19,094 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 06:25:19,100 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 06:25:19,100 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:25:19" (1/1) ... [2024-11-09 06:25:19,102 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77bac5e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:25:19, skipping insertion in model container [2024-11-09 06:25:19,102 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:25:19" (1/1) ... [2024-11-09 06:25:19,146 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 06:25:19,497 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_c1451976-f892-4aca-a42b-5f6e59437a0f/sv-benchmarks/c/list-ext3-properties/sll_circular_traversal-1.i[24132,24145] [2024-11-09 06:25:19,502 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:25:19,512 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 06:25:19,561 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_c1451976-f892-4aca-a42b-5f6e59437a0f/sv-benchmarks/c/list-ext3-properties/sll_circular_traversal-1.i[24132,24145] [2024-11-09 06:25:19,562 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:25:19,596 INFO L204 MainTranslator]: Completed translation [2024-11-09 06:25:19,596 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:25:19 WrapperNode [2024-11-09 06:25:19,597 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 06:25:19,598 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 06:25:19,598 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 06:25:19,598 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 06:25:19,607 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:25:19" (1/1) ... [2024-11-09 06:25:19,621 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:25:19" (1/1) ... [2024-11-09 06:25:19,643 INFO L138 Inliner]: procedures = 122, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 85 [2024-11-09 06:25:19,644 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 06:25:19,645 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 06:25:19,645 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 06:25:19,645 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 06:25:19,652 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:25:19" (1/1) ... [2024-11-09 06:25:19,653 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:25:19" (1/1) ... [2024-11-09 06:25:19,656 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:25:19" (1/1) ... [2024-11-09 06:25:19,657 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:25:19" (1/1) ... [2024-11-09 06:25:19,664 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:25:19" (1/1) ... [2024-11-09 06:25:19,668 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:25:19" (1/1) ... [2024-11-09 06:25:19,670 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:25:19" (1/1) ... [2024-11-09 06:25:19,671 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:25:19" (1/1) ... [2024-11-09 06:25:19,674 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 06:25:19,675 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 06:25:19,676 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 06:25:19,676 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 06:25:19,677 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:25:19" (1/1) ... [2024-11-09 06:25:19,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:25:19,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1451976-f892-4aca-a42b-5f6e59437a0f/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:25:19,712 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1451976-f892-4aca-a42b-5f6e59437a0f/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 06:25:19,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1451976-f892-4aca-a42b-5f6e59437a0f/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 06:25:19,754 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2024-11-09 06:25:19,755 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2024-11-09 06:25:19,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 06:25:19,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 06:25:19,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 06:25:19,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 06:25:19,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-09 06:25:19,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-09 06:25:19,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 06:25:19,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 06:25:19,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 06:25:19,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 06:25:19,876 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 06:25:19,878 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 06:25:19,901 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2024-11-09 06:25:20,110 INFO L? ?]: Removed 24 outVars from TransFormulas that were not future-live. [2024-11-09 06:25:20,110 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 06:25:20,195 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 06:25:20,195 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-09 06:25:20,196 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:25:20 BoogieIcfgContainer [2024-11-09 06:25:20,196 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 06:25:20,201 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 06:25:20,201 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 06:25:20,208 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 06:25:20,208 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:25:19" (1/3) ... [2024-11-09 06:25:20,211 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74dae0ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:25:20, skipping insertion in model container [2024-11-09 06:25:20,212 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:25:19" (2/3) ... [2024-11-09 06:25:20,212 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74dae0ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:25:20, skipping insertion in model container [2024-11-09 06:25:20,212 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:25:20" (3/3) ... [2024-11-09 06:25:20,215 INFO L112 eAbstractionObserver]: Analyzing ICFG sll_circular_traversal-1.i [2024-11-09 06:25:20,237 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 06:25:20,238 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 06:25:20,294 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 06:25:20,300 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;@30b3af93, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 06:25:20,300 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 06:25:20,305 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 20 states have (on average 1.55) internal successors, (31), 22 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:25:20,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-09 06:25:20,312 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:25:20,313 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:25:20,313 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:25:20,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:25:20,319 INFO L85 PathProgramCache]: Analyzing trace with hash 476382296, now seen corresponding path program 1 times [2024-11-09 06:25:20,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:25:20,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848915895] [2024-11-09 06:25:20,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:25:20,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:25:20,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:25:20,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:25:20,635 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:25:20,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848915895] [2024-11-09 06:25:20,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848915895] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:25:20,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:25:20,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 06:25:20,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539187950] [2024-11-09 06:25:20,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:25:20,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:25:20,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:25:20,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:25:20,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:25:20,672 INFO L87 Difference]: Start difference. First operand has 24 states, 20 states have (on average 1.55) internal successors, (31), 22 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:25:20,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:25:20,729 INFO L93 Difference]: Finished difference Result 42 states and 59 transitions. [2024-11-09 06:25:20,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:25:20,732 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-09 06:25:20,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:25:20,740 INFO L225 Difference]: With dead ends: 42 [2024-11-09 06:25:20,740 INFO L226 Difference]: Without dead ends: 21 [2024-11-09 06:25:20,743 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:25:20,750 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 5 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 06:25:20,751 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 41 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 06:25:20,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-09 06:25:20,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2024-11-09 06:25:20,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:25:20,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2024-11-09 06:25:20,789 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 8 [2024-11-09 06:25:20,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:25:20,790 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2024-11-09 06:25:20,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:25:20,791 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2024-11-09 06:25:20,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-09 06:25:20,792 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:25:20,793 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:25:20,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 06:25:20,794 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:25:20,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:25:20,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1010378031, now seen corresponding path program 1 times [2024-11-09 06:25:20,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:25:20,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636203210] [2024-11-09 06:25:20,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:25:20,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:25:20,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:25:20,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:25:20,999 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:25:20,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636203210] [2024-11-09 06:25:20,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636203210] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:25:21,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291655642] [2024-11-09 06:25:21,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:25:21,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:25:21,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1451976-f892-4aca-a42b-5f6e59437a0f/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:25:21,002 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1451976-f892-4aca-a42b-5f6e59437a0f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:25:21,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1451976-f892-4aca-a42b-5f6e59437a0f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 06:25:21,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:25:21,107 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 06:25:21,113 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:25:21,176 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:25:21,177 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:25:21,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:25:21,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291655642] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:25:21,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1333116116] [2024-11-09 06:25:21,242 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2024-11-09 06:25:21,242 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 06:25:21,248 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 06:25:21,254 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 06:25:21,255 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 06:25:22,754 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 06:25:24,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1333116116] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:25:24,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:25:24,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [3, 3, 3] total 12 [2024-11-09 06:25:24,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946464450] [2024-11-09 06:25:24,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:25:24,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 06:25:24,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:25:24,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 06:25:24,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-09 06:25:24,217 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:25:26,493 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:25:29,385 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:25:29,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:25:29,635 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2024-11-09 06:25:29,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 06:25:29,636 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-09 06:25:29,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:25:29,637 INFO L225 Difference]: With dead ends: 23 [2024-11-09 06:25:29,637 INFO L226 Difference]: Without dead ends: 21 [2024-11-09 06:25:29,638 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2024-11-09 06:25:29,639 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 6 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:25:29,640 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 32 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 98 Invalid, 5 Unknown, 0 Unchecked, 5.2s Time] [2024-11-09 06:25:29,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-09 06:25:29,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-11-09 06:25:29,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:25:29,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2024-11-09 06:25:29,649 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 12 [2024-11-09 06:25:29,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:25:29,650 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2024-11-09 06:25:29,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:25:29,650 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2024-11-09 06:25:29,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-09 06:25:29,651 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:25:29,651 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:25:29,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1451976-f892-4aca-a42b-5f6e59437a0f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 06:25:29,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1451976-f892-4aca-a42b-5f6e59437a0f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:25:29,853 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:25:29,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:25:29,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1040145792, now seen corresponding path program 1 times [2024-11-09 06:25:29,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:25:29,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268159110] [2024-11-09 06:25:29,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:25:29,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:25:29,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:25:29,985 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 06:25:29,985 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:25:29,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268159110] [2024-11-09 06:25:29,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268159110] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:25:29,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536643433] [2024-11-09 06:25:29,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:25:29,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:25:29,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1451976-f892-4aca-a42b-5f6e59437a0f/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:25:29,989 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1451976-f892-4aca-a42b-5f6e59437a0f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:25:29,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1451976-f892-4aca-a42b-5f6e59437a0f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 06:25:30,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:25:30,109 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 06:25:30,111 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:25:30,134 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 06:25:30,134 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:25:30,174 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 06:25:30,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536643433] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:25:30,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1364508847] [2024-11-09 06:25:30,178 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2024-11-09 06:25:30,178 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 06:25:30,179 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 06:25:30,179 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 06:25:30,179 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 06:25:31,543 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 06:25:32,762 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '332#(exists ((|v_ULTIMATE.start_main_~data_init~0#1_11| Int) (|v_ULTIMATE.start_main_#t~mem7#1_20| Int)) (and (<= 1 |#StackHeapBarrier|) (<= 1 |ULTIMATE.start_main_~data_new~0#1|) (= |ULTIMATE.start_main_~len~0#1| 5) (not (= |v_ULTIMATE.start_main_#t~mem7#1_20| 1)) (= |v_ULTIMATE.start_main_~data_init~0#1_11| 1) (= (select (select |#memory_int| |ULTIMATE.start_main_~ptr~0#1.base|) (+ |ULTIMATE.start_main_~ptr~0#1.offset| 4)) |v_ULTIMATE.start_main_#t~mem7#1_20|) (= |ULTIMATE.start_main_~head~1#1.offset| 0)))' at error location [2024-11-09 06:25:32,762 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 06:25:32,762 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:25:32,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-11-09 06:25:32,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269321851] [2024-11-09 06:25:32,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:25:32,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 06:25:32,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:25:32,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 06:25:32,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-11-09 06:25:32,765 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:25:32,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:25:32,824 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2024-11-09 06:25:32,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:25:32,825 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-09 06:25:32,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:25:32,826 INFO L225 Difference]: With dead ends: 44 [2024-11-09 06:25:32,826 INFO L226 Difference]: Without dead ends: 32 [2024-11-09 06:25:32,826 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-11-09 06:25:32,827 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 6 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 06:25:32,828 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 37 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 06:25:32,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-09 06:25:32,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-11-09 06:25:32,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 31 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:25:32,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2024-11-09 06:25:32,837 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 15 [2024-11-09 06:25:32,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:25:32,838 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2024-11-09 06:25:32,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:25:32,838 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2024-11-09 06:25:32,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-09 06:25:32,839 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:25:32,839 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:25:32,863 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1451976-f892-4aca-a42b-5f6e59437a0f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 06:25:33,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1451976-f892-4aca-a42b-5f6e59437a0f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:25:33,040 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:25:33,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:25:33,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1837964853, now seen corresponding path program 2 times [2024-11-09 06:25:33,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:25:33,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93727906] [2024-11-09 06:25:33,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:25:33,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:25:33,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:25:35,470 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 06:25:35,471 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:25:35,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93727906] [2024-11-09 06:25:35,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93727906] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:25:35,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238477859] [2024-11-09 06:25:35,472 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 06:25:35,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:25:35,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1451976-f892-4aca-a42b-5f6e59437a0f/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:25:35,475 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1451976-f892-4aca-a42b-5f6e59437a0f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:25:35,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1451976-f892-4aca-a42b-5f6e59437a0f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 06:25:35,749 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-09 06:25:35,750 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:25:35,752 INFO L255 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-09 06:25:35,756 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:25:35,963 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 06:25:36,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2024-11-09 06:25:36,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 1 [2024-11-09 06:25:36,132 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2024-11-09 06:25:36,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 23 [2024-11-09 06:25:36,263 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2024-11-09 06:25:36,263 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 30 [2024-11-09 06:25:36,273 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-09 06:25:36,298 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-09 06:25:36,298 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2024-11-09 06:25:36,527 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-09 06:25:36,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 37 [2024-11-09 06:25:36,545 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:25:36,546 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 42 treesize of output 34 [2024-11-09 06:25:36,563 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-09 06:25:36,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 36 [2024-11-09 06:25:36,591 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:25:36,591 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 30 treesize of output 30 [2024-11-09 06:25:36,619 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-09 06:25:36,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2024-11-09 06:25:36,812 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 06:25:36,813 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:25:37,258 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:25:37,258 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 151 treesize of output 155 [2024-11-09 06:25:37,414 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (= |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset| |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|)) (.cse1 (= |c_ULTIMATE.start_sll_circular_create_~last~0#1.offset| |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|)) (.cse0 (+ |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset| 4))) (and (or (and (forall ((v_prenex_9 (Array Int Int)) (|ULTIMATE.start_sll_circular_create_~new_head~0#1.base| Int) (v_prenex_8 Int) (v_prenex_7 (Array Int Int))) (or (= |c_ULTIMATE.start_main_~data_init~0#1| (select (select (store (store |c_#memory_int| v_prenex_8 v_prenex_9) |ULTIMATE.start_sll_circular_create_~new_head~0#1.base| v_prenex_7) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) .cse0)) (= |ULTIMATE.start_sll_circular_create_~new_head~0#1.base| v_prenex_8) (not (= v_prenex_9 (store (select |c_#memory_int| v_prenex_8) |c_ULTIMATE.start_sll_circular_create_~last~0#1.offset| (select v_prenex_9 |c_ULTIMATE.start_sll_circular_create_~last~0#1.offset|)))))) (or (forall ((v_prenex_9 (Array Int Int)) (v_ArrVal_300 (Array Int Int)) (|ULTIMATE.start_sll_circular_create_~new_head~0#1.base| Int) (v_prenex_8 Int) (v_prenex_7 (Array Int Int))) (or (not (= (store (select (store |c_#memory_int| |ULTIMATE.start_sll_circular_create_~new_head~0#1.base| v_ArrVal_300) v_prenex_8) |c_ULTIMATE.start_sll_circular_create_~last~0#1.offset| (select v_prenex_9 |c_ULTIMATE.start_sll_circular_create_~last~0#1.offset|)) v_prenex_9)) (= |c_ULTIMATE.start_main_~data_init~0#1| (select (select (store (store |c_#memory_int| v_prenex_8 v_prenex_9) |ULTIMATE.start_sll_circular_create_~new_head~0#1.base| v_prenex_7) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) .cse0)))) .cse1)) .cse2) (or (forall ((|ULTIMATE.start_sll_circular_create_~new_head~0#1.base| Int) (v_prenex_7 (Array Int Int))) (= (select (select (store |c_#memory_int| |ULTIMATE.start_sll_circular_create_~new_head~0#1.base| v_prenex_7) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) .cse0) |c_ULTIMATE.start_main_~data_init~0#1|)) .cse2 .cse1) (or (forall ((v_ArrVal_306 (Array Int Int)) (|ULTIMATE.start_sll_circular_create_~last~0#1.base| Int) (v_ArrVal_300 (Array Int Int)) (|ULTIMATE.start_sll_circular_create_~new_head~0#1.base| Int) (v_ArrVal_302 (Array Int Int))) (or (= |ULTIMATE.start_sll_circular_create_~new_head~0#1.base| |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) (= (select (select (store (store |c_#memory_int| |ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_302) |ULTIMATE.start_sll_circular_create_~new_head~0#1.base| v_ArrVal_306) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) .cse0) |c_ULTIMATE.start_main_~data_init~0#1|) (not (= (store (select (store |c_#memory_int| |ULTIMATE.start_sll_circular_create_~new_head~0#1.base| v_ArrVal_300) |ULTIMATE.start_sll_circular_create_~last~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~last~0#1.offset| (select v_ArrVal_302 |c_ULTIMATE.start_sll_circular_create_~last~0#1.offset|)) v_ArrVal_302)))) .cse1) (forall ((|ULTIMATE.start_sll_circular_create_~new_head~0#1.base| Int)) (or (forall ((v_ArrVal_306 (Array Int Int)) (|ULTIMATE.start_sll_circular_create_~last~0#1.base| Int) (v_ArrVal_302 (Array Int Int))) (or (not (= v_ArrVal_302 (store (select |c_#memory_int| |ULTIMATE.start_sll_circular_create_~last~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~last~0#1.offset| (select v_ArrVal_302 |c_ULTIMATE.start_sll_circular_create_~last~0#1.offset|)))) (= |ULTIMATE.start_sll_circular_create_~new_head~0#1.base| |ULTIMATE.start_sll_circular_create_~last~0#1.base|) (= (select (select (store (store |c_#memory_int| |ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_302) |ULTIMATE.start_sll_circular_create_~new_head~0#1.base| v_ArrVal_306) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) .cse0) |c_ULTIMATE.start_main_~data_init~0#1|))) (= |ULTIMATE.start_sll_circular_create_~new_head~0#1.base| |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|))))) is different from false [2024-11-09 06:25:37,607 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (= |c_ULTIMATE.start_sll_circular_create_~last~0#1.offset| 0)) (.cse2 (= |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset| 0)) (.cse0 (+ |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset| 4))) (and (or (forall ((v_ArrVal_306 (Array Int Int)) (|ULTIMATE.start_sll_circular_create_~last~0#1.base| Int) (v_ArrVal_300 (Array Int Int)) (|ULTIMATE.start_sll_circular_create_~new_head~0#1.base| Int) (v_ArrVal_302 (Array Int Int))) (or (= |ULTIMATE.start_sll_circular_create_~new_head~0#1.base| |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) (= (select (select (store (store |c_#memory_int| |ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_302) |ULTIMATE.start_sll_circular_create_~new_head~0#1.base| v_ArrVal_306) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) .cse0) |c_ULTIMATE.start_main_~data_init~0#1|) (not (= (store (select (store |c_#memory_int| |ULTIMATE.start_sll_circular_create_~new_head~0#1.base| v_ArrVal_300) |ULTIMATE.start_sll_circular_create_~last~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~last~0#1.offset| (select v_ArrVal_302 |c_ULTIMATE.start_sll_circular_create_~last~0#1.offset|)) v_ArrVal_302)))) .cse1) (or (and (forall ((v_prenex_9 (Array Int Int)) (|ULTIMATE.start_sll_circular_create_~new_head~0#1.base| Int) (v_prenex_8 Int) (v_prenex_7 (Array Int Int))) (or (= |c_ULTIMATE.start_main_~data_init~0#1| (select (select (store (store |c_#memory_int| v_prenex_8 v_prenex_9) |ULTIMATE.start_sll_circular_create_~new_head~0#1.base| v_prenex_7) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) .cse0)) (= |ULTIMATE.start_sll_circular_create_~new_head~0#1.base| v_prenex_8) (not (= v_prenex_9 (store (select |c_#memory_int| v_prenex_8) |c_ULTIMATE.start_sll_circular_create_~last~0#1.offset| (select v_prenex_9 |c_ULTIMATE.start_sll_circular_create_~last~0#1.offset|)))))) (or .cse1 (forall ((v_prenex_9 (Array Int Int)) (v_ArrVal_300 (Array Int Int)) (|ULTIMATE.start_sll_circular_create_~new_head~0#1.base| Int) (v_prenex_8 Int) (v_prenex_7 (Array Int Int))) (or (not (= (store (select (store |c_#memory_int| |ULTIMATE.start_sll_circular_create_~new_head~0#1.base| v_ArrVal_300) v_prenex_8) |c_ULTIMATE.start_sll_circular_create_~last~0#1.offset| (select v_prenex_9 |c_ULTIMATE.start_sll_circular_create_~last~0#1.offset|)) v_prenex_9)) (= |c_ULTIMATE.start_main_~data_init~0#1| (select (select (store (store |c_#memory_int| v_prenex_8 v_prenex_9) |ULTIMATE.start_sll_circular_create_~new_head~0#1.base| v_prenex_7) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) .cse0)))))) .cse2) (or (forall ((|ULTIMATE.start_sll_circular_create_~new_head~0#1.base| Int) (v_prenex_7 (Array Int Int))) (= (select (select (store |c_#memory_int| |ULTIMATE.start_sll_circular_create_~new_head~0#1.base| v_prenex_7) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) .cse0) |c_ULTIMATE.start_main_~data_init~0#1|)) .cse1 .cse2) (forall ((|ULTIMATE.start_sll_circular_create_~new_head~0#1.base| Int)) (or (forall ((v_ArrVal_306 (Array Int Int)) (|ULTIMATE.start_sll_circular_create_~last~0#1.base| Int) (v_ArrVal_302 (Array Int Int))) (or (not (= v_ArrVal_302 (store (select |c_#memory_int| |ULTIMATE.start_sll_circular_create_~last~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~last~0#1.offset| (select v_ArrVal_302 |c_ULTIMATE.start_sll_circular_create_~last~0#1.offset|)))) (= |ULTIMATE.start_sll_circular_create_~new_head~0#1.base| |ULTIMATE.start_sll_circular_create_~last~0#1.base|) (= (select (select (store (store |c_#memory_int| |ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_302) |ULTIMATE.start_sll_circular_create_~new_head~0#1.base| v_ArrVal_306) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) .cse0) |c_ULTIMATE.start_main_~data_init~0#1|))) (= |ULTIMATE.start_sll_circular_create_~new_head~0#1.base| |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|))))) is different from false [2024-11-09 06:25:37,738 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:25:37,739 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 37 [2024-11-09 06:25:37,751 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:25:37,752 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 151 treesize of output 151 [2024-11-09 06:25:37,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2024-11-09 06:25:37,851 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-11-09 06:25:37,864 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:25:37,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 33 [2024-11-09 06:25:37,875 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:25:37,885 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:25:37,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 43 [2024-11-09 06:25:37,921 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 25 [2024-11-09 06:25:37,935 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-09 06:25:37,936 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 1 [2024-11-09 06:25:38,080 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 13 not checked. [2024-11-09 06:25:38,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238477859] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:25:38,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [893193567] [2024-11-09 06:25:38,083 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2024-11-09 06:25:38,083 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 06:25:38,083 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 06:25:38,084 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 06:25:38,084 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 06:25:39,283 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 06:25:40,823 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '623#(exists ((|v_ULTIMATE.start_main_~data_init~0#1_13| Int) (|v_ULTIMATE.start_main_#t~mem7#1_28| Int)) (and (<= 1 |#StackHeapBarrier|) (not (= |v_ULTIMATE.start_main_#t~mem7#1_28| 1)) (<= 1 |ULTIMATE.start_main_~data_new~0#1|) (= |ULTIMATE.start_main_~len~0#1| 5) (= (select (select |#memory_int| |ULTIMATE.start_main_~ptr~0#1.base|) (+ |ULTIMATE.start_main_~ptr~0#1.offset| 4)) |v_ULTIMATE.start_main_#t~mem7#1_28|) (= |ULTIMATE.start_main_~head~1#1.offset| 0) (= |v_ULTIMATE.start_main_~data_init~0#1_13| 1)))' at error location [2024-11-09 06:25:40,823 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 06:25:40,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:25:40,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 30 [2024-11-09 06:25:40,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648091668] [2024-11-09 06:25:40,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:25:40,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-09 06:25:40,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:25:40,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-09 06:25:40,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1271, Unknown=17, NotChecked=146, Total=1560 [2024-11-09 06:25:40,826 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 31 states, 31 states have (on average 2.032258064516129) internal successors, (63), 30 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:25:42,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:25:42,060 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2024-11-09 06:25:42,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 06:25:42,061 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.032258064516129) internal successors, (63), 30 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-09 06:25:42,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:25:42,061 INFO L225 Difference]: With dead ends: 46 [2024-11-09 06:25:42,062 INFO L226 Difference]: Without dead ends: 44 [2024-11-09 06:25:42,063 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 502 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=275, Invalid=2068, Unknown=17, NotChecked=190, Total=2550 [2024-11-09 06:25:42,064 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 33 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 67 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:25:42,064 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 143 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 301 Invalid, 0 Unknown, 67 Unchecked, 0.3s Time] [2024-11-09 06:25:42,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-09 06:25:42,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 35. [2024-11-09 06:25:42,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 34 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:25:42,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2024-11-09 06:25:42,075 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 27 [2024-11-09 06:25:42,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:25:42,075 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2024-11-09 06:25:42,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.032258064516129) internal successors, (63), 30 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:25:42,076 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2024-11-09 06:25:42,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-09 06:25:42,076 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:25:42,076 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:25:42,092 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1451976-f892-4aca-a42b-5f6e59437a0f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 06:25:42,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1451976-f892-4aca-a42b-5f6e59437a0f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:25:42,280 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:25:42,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:25:42,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1140919505, now seen corresponding path program 1 times [2024-11-09 06:25:42,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:25:42,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429912502] [2024-11-09 06:25:42,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:25:42,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:25:42,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:25:43,062 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 24 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 06:25:43,063 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:25:43,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429912502] [2024-11-09 06:25:43,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429912502] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:25:43,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474128843] [2024-11-09 06:25:43,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:25:43,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:25:43,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1451976-f892-4aca-a42b-5f6e59437a0f/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:25:43,066 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1451976-f892-4aca-a42b-5f6e59437a0f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:25:43,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1451976-f892-4aca-a42b-5f6e59437a0f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 06:25:43,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:25:43,262 INFO L255 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-09 06:25:43,270 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:25:43,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-09 06:25:43,321 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-09 06:25:43,321 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-09 06:25:43,375 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-09 06:25:43,375 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-09 06:25:43,414 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-09 06:25:43,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2024-11-09 06:25:43,495 INFO L349 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2024-11-09 06:25:43,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2024-11-09 06:25:43,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 1 [2024-11-09 06:25:43,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 12 [2024-11-09 06:25:43,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2024-11-09 06:25:43,613 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 06:25:43,613 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:25:43,636 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_458 (Array Int Int))) (not (= |c_ULTIMATE.start_sll_circular_create_~head~0#1.base| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_458) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|)))) is different from false [2024-11-09 06:25:43,657 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:25:43,657 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 30 [2024-11-09 06:25:43,660 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 25 [2024-11-09 06:25:43,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2024-11-09 06:25:43,827 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 4 not checked. [2024-11-09 06:25:43,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474128843] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:25:43,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1071647385] [2024-11-09 06:25:43,830 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2024-11-09 06:25:43,831 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 06:25:43,831 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 06:25:43,831 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 06:25:43,831 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 06:25:44,367 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 06:25:45,567 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '938#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_#memory_int_108| (Array Int (Array Int Int))) (|v_#memory_int_109| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_75| (Array Int (Array Int Int))) (|v_ULTIMATE.start_sll_circular_create_~last~0#1.base_19| Int) (|v_#memory_$Pointer$.base_78| (Array Int (Array Int Int)))) (and (= |#memory_$Pointer$.offset| (store (store |v_#memory_$Pointer$.offset_75| |v_ULTIMATE.start_sll_circular_create_~last~0#1.base_19| (store (select |v_#memory_$Pointer$.offset_75| |v_ULTIMATE.start_sll_circular_create_~last~0#1.base_19|) 0 0)) |ULTIMATE.start_main_~head~1#1.base| (store (select (store |v_#memory_$Pointer$.offset_75| |v_ULTIMATE.start_sll_circular_create_~last~0#1.base_19| (store (select |v_#memory_$Pointer$.offset_75| |v_ULTIMATE.start_sll_circular_create_~last~0#1.base_19|) 0 0)) |ULTIMATE.start_main_~head~1#1.base|) 4 (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~head~1#1.base|) 4)))) (= (store (store |v_#memory_$Pointer$.base_78| |v_ULTIMATE.start_sll_circular_create_~last~0#1.base_19| (store (select |v_#memory_$Pointer$.base_78| |v_ULTIMATE.start_sll_circular_create_~last~0#1.base_19|) 0 |ULTIMATE.start_main_~head~1#1.base|)) |ULTIMATE.start_main_~head~1#1.base| (store (select (store |v_#memory_$Pointer$.base_78| |v_ULTIMATE.start_sll_circular_create_~last~0#1.base_19| (store (select |v_#memory_$Pointer$.base_78| |v_ULTIMATE.start_sll_circular_create_~last~0#1.base_19|) 0 |ULTIMATE.start_main_~head~1#1.base|)) |ULTIMATE.start_main_~head~1#1.base|) 4 (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~head~1#1.base|) 4))) |#memory_$Pointer$.base|) (= (store |v_#memory_int_108| |v_ULTIMATE.start_sll_circular_create_~last~0#1.base_19| (store (select |v_#memory_int_108| |v_ULTIMATE.start_sll_circular_create_~last~0#1.base_19|) 0 (select (select |v_#memory_int_109| |v_ULTIMATE.start_sll_circular_create_~last~0#1.base_19|) 0))) |v_#memory_int_109|) (= |#memory_int| (store |v_#memory_int_109| |ULTIMATE.start_main_~head~1#1.base| (store (select |v_#memory_int_109| |ULTIMATE.start_main_~head~1#1.base|) 4 1))) (= (select (select |v_#memory_int_109| |ULTIMATE.start_main_~head~1#1.base|) 4) 1))) (= |ULTIMATE.start_main_~data_init~0#1| 1) (= |ULTIMATE.start_main_~ptr~0#1.offset| 0) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~head~1#1.base|) 0) 0) (= |ULTIMATE.start_main_~ptr~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~head~1#1.base|) 0)) (= |ULTIMATE.start_main_~head~1#1.offset| 0) (= |ULTIMATE.start_main_~ptr~0#1.base| |ULTIMATE.start_main_~head~1#1.base|))' at error location [2024-11-09 06:25:45,567 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 06:25:45,567 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:25:45,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 19 [2024-11-09 06:25:45,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635120159] [2024-11-09 06:25:45,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:25:45,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-09 06:25:45,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:25:45,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-09 06:25:45,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=836, Unknown=1, NotChecked=58, Total=992 [2024-11-09 06:25:45,570 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 20 states, 20 states have (on average 2.75) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:25:45,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:25:45,795 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2024-11-09 06:25:45,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 06:25:45,798 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.75) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-11-09 06:25:45,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:25:45,799 INFO L225 Difference]: With dead ends: 41 [2024-11-09 06:25:45,799 INFO L226 Difference]: Without dead ends: 35 [2024-11-09 06:25:45,800 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 62 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=138, Invalid=987, Unknown=1, NotChecked=64, Total=1190 [2024-11-09 06:25:45,800 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 11 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:25:45,801 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 92 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 131 Invalid, 0 Unknown, 17 Unchecked, 0.1s Time] [2024-11-09 06:25:45,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-09 06:25:45,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2024-11-09 06:25:45,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 34 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:25:45,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2024-11-09 06:25:45,810 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 28 [2024-11-09 06:25:45,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:25:45,811 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2024-11-09 06:25:45,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.75) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:25:45,811 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2024-11-09 06:25:45,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-09 06:25:45,812 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:25:45,812 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:25:45,833 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1451976-f892-4aca-a42b-5f6e59437a0f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 06:25:46,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1451976-f892-4aca-a42b-5f6e59437a0f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:25:46,016 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:25:46,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:25:46,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1726155620, now seen corresponding path program 3 times [2024-11-09 06:25:46,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:25:46,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78362627] [2024-11-09 06:25:46,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:25:46,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:25:46,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:25:48,762 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 06:25:48,762 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:25:48,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78362627] [2024-11-09 06:25:48,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78362627] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:25:48,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557297461] [2024-11-09 06:25:48,763 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 06:25:48,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:25:48,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1451976-f892-4aca-a42b-5f6e59437a0f/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:25:48,765 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1451976-f892-4aca-a42b-5f6e59437a0f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:25:48,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1451976-f892-4aca-a42b-5f6e59437a0f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 06:25:49,291 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 06:25:49,291 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:25:49,294 INFO L255 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 93 conjuncts are in the unsatisfiable core [2024-11-09 06:25:49,299 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:25:49,313 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-09 06:25:49,378 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-09 06:25:49,379 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-09 06:25:49,500 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-09 06:25:49,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-11-09 06:25:49,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 06:25:49,721 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2024-11-09 06:25:49,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2024-11-09 06:25:49,844 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 1 [2024-11-09 06:25:49,856 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-09 06:25:49,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2024-11-09 06:25:50,123 INFO L349 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2024-11-09 06:25:50,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 39 [2024-11-09 06:25:50,142 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-09 06:25:50,142 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2024-11-09 06:25:50,192 INFO L349 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2024-11-09 06:25:50,192 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 22 [2024-11-09 06:25:50,404 INFO L349 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2024-11-09 06:25:50,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 115 treesize of output 80 [2024-11-09 06:25:50,458 INFO L349 Elim1Store]: treesize reduction 52, result has 26.8 percent of original size [2024-11-09 06:25:50,458 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 67 [2024-11-09 06:25:50,491 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-09 06:25:50,492 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28 [2024-11-09 06:25:51,178 INFO L349 Elim1Store]: treesize reduction 80, result has 1.2 percent of original size [2024-11-09 06:25:51,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 199 treesize of output 142 [2024-11-09 06:25:51,208 INFO L349 Elim1Store]: treesize reduction 96, result has 1.0 percent of original size [2024-11-09 06:25:51,209 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 206 treesize of output 206 [2024-11-09 06:25:51,334 INFO L349 Elim1Store]: treesize reduction 60, result has 62.5 percent of original size [2024-11-09 06:25:51,335 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 192 treesize of output 265 [2024-11-09 06:27:24,310 WARN L286 SmtUtils]: Spent 1.27m on a formula simplification. DAG size of input: 6963 DAG size of output: 1 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-11-09 06:27:24,310 INFO L349 Elim1Store]: treesize reduction 13688, result has 0.0 percent of original size [2024-11-09 06:27:24,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 59 select indices, 59 select index equivalence classes, 1 disjoint index pairs (out of 1711 index pairs), introduced 60 new quantified variables, introduced 1711 case distinctions, treesize of input 2935 treesize of output 1791 [2024-11-09 06:33:48,864 WARN L286 SmtUtils]: Spent 6.40m on a formula simplification. DAG size of input: 6963 DAG size of output: 6959 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-11-09 06:33:48,869 INFO L349 Elim1Store]: treesize reduction 8, result has 99.9 percent of original size [2024-11-09 06:33:48,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 59 select indices, 59 select index equivalence classes, 0 disjoint index pairs (out of 1711 index pairs), introduced 60 new quantified variables, introduced 1711 case distinctions, treesize of input 2908 treesize of output 15043 [2024-11-09 06:33:54,904 WARN L286 SmtUtils]: Spent 6.01s on a formula simplification that was a NOOP. DAG size: 7358 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 06:34:01,104 WARN L286 SmtUtils]: Spent 5.96s on a formula simplification that was a NOOP. DAG size: 7306 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 06:34:02,854 INFO L224 Elim1Store]: Index analysis took 1190 ms [2024-11-09 06:35:03,945 WARN L286 SmtUtils]: Spent 1.02m on a formula simplification. DAG size of input: 2014 DAG size of output: 1805 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-11-09 06:35:03,946 INFO L349 Elim1Store]: treesize reduction 596, result has 85.5 percent of original size [2024-11-09 06:35:03,948 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 30 select indices, 30 select index equivalence classes, 1 disjoint index pairs (out of 435 index pairs), introduced 30 new quantified variables, introduced 465 case distinctions, treesize of input 1331 treesize of output 4703 [2024-11-09 06:35:12,063 WARN L286 SmtUtils]: Spent 8.10s on a formula simplification that was a NOOP. DAG size: 8940 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 06:35:20,635 WARN L286 SmtUtils]: Spent 8.20s on a formula simplification that was a NOOP. DAG size: 8938 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 06:35:28,670 INFO L224 Elim1Store]: Index analysis took 7298 ms [2024-11-09 06:35:29,888 INFO L349 Elim1Store]: treesize reduction 3960, result has 0.0 percent of original size [2024-11-09 06:35:29,889 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 32 select indices, 32 select index equivalence classes, 2 disjoint index pairs (out of 496 index pairs), introduced 32 new quantified variables, introduced 495 case distinctions, treesize of input 1281 treesize of output 1246 [2024-11-09 06:35:43,592 WARN L286 SmtUtils]: Spent 13.68s on a formula simplification. DAG size of input: 8995 DAG size of output: 8995 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 06:36:07,370 WARN L286 SmtUtils]: Spent 9.77s on a formula simplification that was a NOOP. DAG size: 8931 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 06:36:16,066 INFO L224 Elim1Store]: Index analysis took 7765 ms [2024-11-09 06:36:53,524 WARN L286 SmtUtils]: Spent 37.44s on a formula simplification that was a NOOP. DAG size: 2045 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-11-09 06:36:53,525 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:36:53,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 32 select indices, 32 select index equivalence classes, 1 disjoint index pairs (out of 496 index pairs), introduced 32 new quantified variables, introduced 495 case distinctions, treesize of input 1273 treesize of output 4985 [2024-11-09 06:37:20,930 WARN L286 SmtUtils]: Spent 27.38s on a formula simplification. DAG size of input: 9888 DAG size of output: 9858 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 06:37:50,152 WARN L286 SmtUtils]: Spent 14.12s on a formula simplification that was a NOOP. DAG size: 9854 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)