./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b 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_40852290-a43d-488a-8b89-2bc301360a8a/bin/utaipan-verify-FOvIYxoinp/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40852290-a43d-488a-8b89-2bc301360a8a/bin/utaipan-verify-FOvIYxoinp/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40852290-a43d-488a-8b89-2bc301360a8a/bin/utaipan-verify-FOvIYxoinp/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40852290-a43d-488a-8b89-2bc301360a8a/bin/utaipan-verify-FOvIYxoinp/config/TaipanReach.xml -i ../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40852290-a43d-488a-8b89-2bc301360a8a/bin/utaipan-verify-FOvIYxoinp/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40852290-a43d-488a-8b89-2bc301360a8a/bin/utaipan-verify-FOvIYxoinp --witnessprinter.witness.filename witness.graphml --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 6070ac475d5b3c3d5905eb0c203232134efabc1c427fcfbbf8cf82789693617b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 20:31:04,264 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 20:31:04,390 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40852290-a43d-488a-8b89-2bc301360a8a/bin/utaipan-verify-FOvIYxoinp/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-06 20:31:04,403 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 20:31:04,405 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 20:31:04,447 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 20:31:04,448 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 20:31:04,448 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 20:31:04,449 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 20:31:04,454 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 20:31:04,455 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-06 20:31:04,456 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-06 20:31:04,457 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-06 20:31:04,458 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-06 20:31:04,459 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-06 20:31:04,459 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-06 20:31:04,460 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-06 20:31:04,460 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-06 20:31:04,461 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-06 20:31:04,461 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-06 20:31:04,462 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-06 20:31:04,463 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-06 20:31:04,464 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 20:31:04,465 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 20:31:04,465 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 20:31:04,465 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 20:31:04,466 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 20:31:04,466 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 20:31:04,467 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 20:31:04,467 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 20:31:04,469 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 20:31:04,469 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 20:31:04,469 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 20:31:04,469 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 20:31:04,470 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 20:31:04,470 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 20:31:04,470 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 20:31:04,470 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 20:31:04,471 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 20:31:04,471 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 20:31:04,471 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-06 20:31:04,472 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 20:31:04,472 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 20:31:04,473 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-06 20:31:04,473 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 20:31:04,473 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_40852290-a43d-488a-8b89-2bc301360a8a/bin/utaipan-verify-FOvIYxoinp/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40852290-a43d-488a-8b89-2bc301360a8a/bin/utaipan-verify-FOvIYxoinp Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6070ac475d5b3c3d5905eb0c203232134efabc1c427fcfbbf8cf82789693617b [2023-11-06 20:31:04,748 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 20:31:04,781 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 20:31:04,784 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 20:31:04,785 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 20:31:04,786 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 20:31:04,790 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40852290-a43d-488a-8b89-2bc301360a8a/bin/utaipan-verify-FOvIYxoinp/../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-1.i [2023-11-06 20:31:08,030 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 20:31:08,312 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 20:31:08,313 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40852290-a43d-488a-8b89-2bc301360a8a/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-1.i [2023-11-06 20:31:08,329 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40852290-a43d-488a-8b89-2bc301360a8a/bin/utaipan-verify-FOvIYxoinp/data/e13824891/6fd0548423104e3d934f0f100c08a09b/FLAGf5c444564 [2023-11-06 20:31:08,344 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40852290-a43d-488a-8b89-2bc301360a8a/bin/utaipan-verify-FOvIYxoinp/data/e13824891/6fd0548423104e3d934f0f100c08a09b [2023-11-06 20:31:08,347 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 20:31:08,349 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 20:31:08,350 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 20:31:08,351 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 20:31:08,356 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 20:31:08,357 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:31:08" (1/1) ... [2023-11-06 20:31:08,358 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@366c27f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:08, skipping insertion in model container [2023-11-06 20:31:08,358 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:31:08" (1/1) ... [2023-11-06 20:31:08,431 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 20:31:08,758 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40852290-a43d-488a-8b89-2bc301360a8a/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-1.i[22480,22493] [2023-11-06 20:31:08,765 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40852290-a43d-488a-8b89-2bc301360a8a/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-1.i[22552,22565] [2023-11-06 20:31:08,768 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40852290-a43d-488a-8b89-2bc301360a8a/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-1.i[22704,22717] [2023-11-06 20:31:08,769 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40852290-a43d-488a-8b89-2bc301360a8a/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-1.i[22778,22791] [2023-11-06 20:31:08,781 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 20:31:08,794 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 20:31:08,862 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40852290-a43d-488a-8b89-2bc301360a8a/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-1.i[22480,22493] [2023-11-06 20:31:08,863 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40852290-a43d-488a-8b89-2bc301360a8a/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-1.i[22552,22565] [2023-11-06 20:31:08,865 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40852290-a43d-488a-8b89-2bc301360a8a/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-1.i[22704,22717] [2023-11-06 20:31:08,866 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40852290-a43d-488a-8b89-2bc301360a8a/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-1.i[22778,22791] [2023-11-06 20:31:08,869 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 20:31:08,903 INFO L206 MainTranslator]: Completed translation [2023-11-06 20:31:08,904 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:08 WrapperNode [2023-11-06 20:31:08,904 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 20:31:08,905 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 20:31:08,905 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 20:31:08,905 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 20:31:08,912 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:08" (1/1) ... [2023-11-06 20:31:08,925 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:08" (1/1) ... [2023-11-06 20:31:08,948 INFO L138 Inliner]: procedures = 119, calls = 32, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 117 [2023-11-06 20:31:08,948 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 20:31:08,949 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 20:31:08,949 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 20:31:08,950 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 20:31:08,960 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:08" (1/1) ... [2023-11-06 20:31:08,960 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:08" (1/1) ... [2023-11-06 20:31:08,964 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:08" (1/1) ... [2023-11-06 20:31:08,964 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:08" (1/1) ... [2023-11-06 20:31:08,982 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:08" (1/1) ... [2023-11-06 20:31:08,988 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:08" (1/1) ... [2023-11-06 20:31:08,990 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:08" (1/1) ... [2023-11-06 20:31:08,991 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:08" (1/1) ... [2023-11-06 20:31:09,014 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 20:31:09,015 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 20:31:09,015 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 20:31:09,015 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 20:31:09,016 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:08" (1/1) ... [2023-11-06 20:31:09,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 20:31:09,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40852290-a43d-488a-8b89-2bc301360a8a/bin/utaipan-verify-FOvIYxoinp/z3 [2023-11-06 20:31:09,054 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40852290-a43d-488a-8b89-2bc301360a8a/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 20:31:09,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40852290-a43d-488a-8b89-2bc301360a8a/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 20:31:09,087 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 20:31:09,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 20:31:09,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 20:31:09,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 20:31:09,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 20:31:09,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 20:31:09,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 20:31:09,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 20:31:09,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 20:31:09,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 20:31:09,198 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 20:31:09,200 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 20:31:09,504 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 20:31:09,629 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 20:31:09,642 INFO L302 CfgBuilder]: Removed 11 assume(true) statements. [2023-11-06 20:31:09,645 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:31:09 BoogieIcfgContainer [2023-11-06 20:31:09,645 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 20:31:09,648 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 20:31:09,651 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 20:31:09,654 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 20:31:09,655 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 08:31:08" (1/3) ... [2023-11-06 20:31:09,656 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7260ed8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:31:09, skipping insertion in model container [2023-11-06 20:31:09,657 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:08" (2/3) ... [2023-11-06 20:31:09,657 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7260ed8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:31:09, skipping insertion in model container [2023-11-06 20:31:09,659 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:31:09" (3/3) ... [2023-11-06 20:31:09,661 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-rb-cnstr_1-1.i [2023-11-06 20:31:09,681 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 20:31:09,682 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-06 20:31:09,768 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 20:31:09,774 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@2c5f5aa3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-06 20:31:09,774 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-06 20:31:09,781 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 26 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:31:09,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-06 20:31:09,786 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:31:09,787 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 20:31:09,787 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-06 20:31:09,792 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:31:09,792 INFO L85 PathProgramCache]: Analyzing trace with hash 153922345, now seen corresponding path program 1 times [2023-11-06 20:31:09,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:31:09,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248057925] [2023-11-06 20:31:09,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:31:09,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:31:09,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:31:10,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:31:10,063 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:31:10,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248057925] [2023-11-06 20:31:10,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248057925] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:31:10,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:31:10,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 20:31:10,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023093102] [2023-11-06 20:31:10,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:31:10,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 20:31:10,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:31:10,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 20:31:10,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 20:31:10,135 INFO L87 Difference]: Start difference. First operand has 27 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 26 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:31:10,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:31:10,214 INFO L93 Difference]: Finished difference Result 51 states and 81 transitions. [2023-11-06 20:31:10,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 20:31:10,218 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2023-11-06 20:31:10,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:31:10,227 INFO L225 Difference]: With dead ends: 51 [2023-11-06 20:31:10,228 INFO L226 Difference]: Without dead ends: 25 [2023-11-06 20:31:10,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 20:31:10,240 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 20:31:10,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 20:31:10,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-11-06 20:31:10,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-11-06 20:31:10,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 24 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:31:10,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2023-11-06 20:31:10,285 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 5 [2023-11-06 20:31:10,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:31:10,286 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2023-11-06 20:31:10,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:31:10,287 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2023-11-06 20:31:10,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-06 20:31:10,288 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:31:10,288 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 20:31:10,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 20:31:10,290 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-06 20:31:10,290 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:31:10,291 INFO L85 PathProgramCache]: Analyzing trace with hash 464256366, now seen corresponding path program 1 times [2023-11-06 20:31:10,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:31:10,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950179209] [2023-11-06 20:31:10,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:31:10,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:31:10,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:31:10,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:31:10,469 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:31:10,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950179209] [2023-11-06 20:31:10,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950179209] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:31:10,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:31:10,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 20:31:10,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670032771] [2023-11-06 20:31:10,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:31:10,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 20:31:10,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:31:10,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 20:31:10,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 20:31:10,477 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:31:10,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:31:10,569 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2023-11-06 20:31:10,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 20:31:10,570 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-06 20:31:10,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:31:10,572 INFO L225 Difference]: With dead ends: 28 [2023-11-06 20:31:10,573 INFO L226 Difference]: Without dead ends: 26 [2023-11-06 20:31:10,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 20:31:10,577 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 37 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 20:31:10,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 24 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 20:31:10,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-11-06 20:31:10,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2023-11-06 20:31:10,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 20 states have (on average 1.25) internal successors, (25), 22 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) [2023-11-06 20:31:10,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2023-11-06 20:31:10,591 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 6 [2023-11-06 20:31:10,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:31:10,591 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2023-11-06 20:31:10,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:31:10,592 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2023-11-06 20:31:10,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-06 20:31:10,592 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:31:10,593 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:31:10,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 20:31:10,594 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-06 20:31:10,595 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:31:10,596 INFO L85 PathProgramCache]: Analyzing trace with hash 870651803, now seen corresponding path program 1 times [2023-11-06 20:31:10,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:31:10,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961248964] [2023-11-06 20:31:10,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:31:10,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:31:10,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:31:10,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:31:10,836 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:31:10,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961248964] [2023-11-06 20:31:10,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961248964] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:31:10,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:31:10,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 20:31:10,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218522825] [2023-11-06 20:31:10,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:31:10,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 20:31:10,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:31:10,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 20:31:10,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 20:31:10,847 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:31:11,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:31:11,074 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2023-11-06 20:31:11,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 20:31:11,076 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2023-11-06 20:31:11,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:31:11,077 INFO L225 Difference]: With dead ends: 48 [2023-11-06 20:31:11,082 INFO L226 Difference]: Without dead ends: 46 [2023-11-06 20:31:11,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 20:31:11,085 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 32 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 20:31:11,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 61 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 20:31:11,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-11-06 20:31:11,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 30. [2023-11-06 20:31:11,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 29 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:31:11,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2023-11-06 20:31:11,099 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 9 [2023-11-06 20:31:11,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:31:11,100 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2023-11-06 20:31:11,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:31:11,100 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2023-11-06 20:31:11,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-06 20:31:11,101 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:31:11,102 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:31:11,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 20:31:11,102 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-06 20:31:11,103 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:31:11,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1598018176, now seen corresponding path program 1 times [2023-11-06 20:31:11,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:31:11,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309981678] [2023-11-06 20:31:11,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:31:11,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:31:11,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:31:11,822 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:31:11,822 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:31:11,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309981678] [2023-11-06 20:31:11,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309981678] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 20:31:11,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321961544] [2023-11-06 20:31:11,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:31:11,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 20:31:11,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40852290-a43d-488a-8b89-2bc301360a8a/bin/utaipan-verify-FOvIYxoinp/z3 [2023-11-06 20:31:11,831 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40852290-a43d-488a-8b89-2bc301360a8a/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 20:31:11,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40852290-a43d-488a-8b89-2bc301360a8a/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 20:31:11,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:31:11,987 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-06 20:31:11,997 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 20:31:12,067 INFO L351 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 [2023-11-06 20:31:12,083 INFO L351 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 [2023-11-06 20:31:12,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 20:31:12,381 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 184 [2023-11-06 20:31:12,465 INFO L322 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-11-06 20:31:12,465 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 150 treesize of output 174 [2023-11-06 20:31:12,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 20:31:12,515 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 159 treesize of output 176 [2023-11-06 20:31:12,649 INFO L322 Elim1Store]: treesize reduction 82, result has 29.9 percent of original size [2023-11-06 20:31:12,650 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 141 treesize of output 183 [2023-11-06 20:31:12,726 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 138 [2023-11-06 20:31:12,792 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 18 treesize of output 11 [2023-11-06 20:31:12,946 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 56 [2023-11-06 20:31:13,037 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 11 [2023-11-06 20:31:13,125 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 22 treesize of output 20 [2023-11-06 20:31:13,151 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 36 treesize of output 32 [2023-11-06 20:31:13,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 20:31:13,194 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 5 treesize of output 3 [2023-11-06 20:31:13,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 20:31:13,209 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 5 treesize of output 3 [2023-11-06 20:31:13,274 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:31:13,275 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 20:31:13,471 INFO L322 Elim1Store]: treesize reduction 10, result has 70.6 percent of original size [2023-11-06 20:31:13,472 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 183 treesize of output 212 [2023-11-06 20:31:13,556 INFO L322 Elim1Store]: treesize reduction 20, result has 63.6 percent of original size [2023-11-06 20:31:13,557 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 174 treesize of output 211 [2023-11-06 20:31:13,664 INFO L322 Elim1Store]: treesize reduction 20, result has 63.6 percent of original size [2023-11-06 20:31:13,665 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 162 treesize of output 199 [2023-11-06 20:31:13,953 INFO L351 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 25 treesize of output 23 [2023-11-06 20:31:13,982 INFO L322 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-06 20:31:13,983 INFO L351 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 2 case distinctions, treesize of input 28 treesize of output 11 [2023-11-06 20:31:14,006 INFO L351 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 40 treesize of output 36 [2023-11-06 20:31:14,457 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:31:14,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321961544] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 20:31:14,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1310752363] [2023-11-06 20:31:14,482 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-11-06 20:31:14,483 INFO L166 IcfgInterpreter]: Building call graph [2023-11-06 20:31:14,487 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-06 20:31:14,493 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-06 20:31:14,493 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-06 20:31:18,360 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-06 20:31:18,531 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '376#(and (<= 1 |#StackHeapBarrier|) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~end~0#1.base|) 4) 1)) (= |ULTIMATE.start_main_~end~0#1.offset| 0) (= |ULTIMATE.start_main_~end~0#1.base| |ULTIMATE.start_main_~list~0#1.base|) (= |ULTIMATE.start_main_~list~0#1.offset| 0) (not (= |ULTIMATE.start_main_~end~0#1.base| 0)))' at error location [2023-11-06 20:31:18,531 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-06 20:31:18,532 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 20:31:18,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2023-11-06 20:31:18,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759036246] [2023-11-06 20:31:18,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 20:31:18,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 20:31:18,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:31:18,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 20:31:18,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2023-11-06 20:31:18,534 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:31:20,845 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 20:31:23,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 20:31:25,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:31:25,016 INFO L93 Difference]: Finished difference Result 82 states and 93 transitions. [2023-11-06 20:31:25,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 20:31:25,017 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 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) Word has length 11 [2023-11-06 20:31:25,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:31:25,018 INFO L225 Difference]: With dead ends: 82 [2023-11-06 20:31:25,018 INFO L226 Difference]: Without dead ends: 80 [2023-11-06 20:31:25,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2023-11-06 20:31:25,020 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 119 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 12 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-11-06 20:31:25,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 105 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 72 Invalid, 2 Unknown, 0 Unchecked, 5.2s Time] [2023-11-06 20:31:25,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-11-06 20:31:25,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 34. [2023-11-06 20:31:25,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 33 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) [2023-11-06 20:31:25,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2023-11-06 20:31:25,034 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 11 [2023-11-06 20:31:25,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:31:25,035 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2023-11-06 20:31:25,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:31:25,035 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2023-11-06 20:31:25,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-06 20:31:25,036 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:31:25,036 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:31:25,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40852290-a43d-488a-8b89-2bc301360a8a/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 20:31:25,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40852290-a43d-488a-8b89-2bc301360a8a/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 20:31:25,243 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-06 20:31:25,244 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:31:25,244 INFO L85 PathProgramCache]: Analyzing trace with hash 224323074, now seen corresponding path program 1 times [2023-11-06 20:31:25,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:31:25,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447621170] [2023-11-06 20:31:25,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:31:25,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:31:25,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:31:25,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:31:25,401 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:31:25,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447621170] [2023-11-06 20:31:25,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447621170] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:31:25,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:31:25,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 20:31:25,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387858641] [2023-11-06 20:31:25,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:31:25,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 20:31:25,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:31:25,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 20:31:25,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 20:31:25,404 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:31:25,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:31:25,762 INFO L93 Difference]: Finished difference Result 49 states and 56 transitions. [2023-11-06 20:31:25,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 20:31:25,765 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-06 20:31:25,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:31:25,766 INFO L225 Difference]: With dead ends: 49 [2023-11-06 20:31:25,766 INFO L226 Difference]: Without dead ends: 37 [2023-11-06 20:31:25,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 20:31:25,767 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 4 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 20:31:25,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 55 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 20:31:25,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-11-06 20:31:25,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2023-11-06 20:31:25,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 35 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:31:25,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2023-11-06 20:31:25,781 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 13 [2023-11-06 20:31:25,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:31:25,782 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2023-11-06 20:31:25,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:31:25,782 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2023-11-06 20:31:25,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-06 20:31:25,783 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:31:25,783 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:31:25,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 20:31:25,784 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-06 20:31:25,784 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:31:25,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1457531018, now seen corresponding path program 2 times [2023-11-06 20:31:25,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:31:25,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636858427] [2023-11-06 20:31:25,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:31:25,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:31:26,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:31:28,469 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:31:28,469 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:31:28,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636858427] [2023-11-06 20:31:28,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636858427] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 20:31:28,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600219302] [2023-11-06 20:31:28,470 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 20:31:28,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 20:31:28,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40852290-a43d-488a-8b89-2bc301360a8a/bin/utaipan-verify-FOvIYxoinp/z3 [2023-11-06 20:31:28,472 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40852290-a43d-488a-8b89-2bc301360a8a/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 20:31:28,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40852290-a43d-488a-8b89-2bc301360a8a/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 20:31:29,517 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-06 20:31:29,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 20:31:29,523 INFO L262 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 57 conjunts are in the unsatisfiable core [2023-11-06 20:31:29,533 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 20:31:29,548 INFO L351 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 [2023-11-06 20:31:29,576 INFO L351 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 [2023-11-06 20:31:29,929 INFO L322 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-11-06 20:31:29,930 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 177 treesize of output 201 [2023-11-06 20:31:29,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 20:31:29,958 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 168 treesize of output 190 [2023-11-06 20:31:29,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 20:31:29,987 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 156 treesize of output 178 [2023-11-06 20:31:30,254 INFO L322 Elim1Store]: treesize reduction 90, result has 23.1 percent of original size [2023-11-06 20:31:30,255 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 156 treesize of output 190 [2023-11-06 20:31:30,294 INFO L351 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 139 [2023-11-06 20:31:30,325 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 149 [2023-11-06 20:31:30,391 INFO L351 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-11-06 20:31:30,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 20:31:30,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 20:31:30,726 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 5 [2023-11-06 20:31:30,889 INFO L351 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 0 case distinctions, treesize of input 16 treesize of output 5 [2023-11-06 20:31:31,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 20:31:31,065 INFO L322 Elim1Store]: treesize reduction 23, result has 4.2 percent of original size [2023-11-06 20:31:31,066 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 116 treesize of output 121 [2023-11-06 20:31:31,729 INFO L351 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 0 case distinctions, treesize of input 33 treesize of output 18 [2023-11-06 20:31:31,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 20:31:31,868 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 20:31:32,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 20:31:32,160 INFO L322 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-11-06 20:31:32,161 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 29 [2023-11-06 20:31:32,382 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 5 [2023-11-06 20:31:33,384 INFO L322 Elim1Store]: treesize reduction 107, result has 13.0 percent of original size [2023-11-06 20:31:33,384 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 305 treesize of output 323 [2023-11-06 20:31:33,579 INFO L322 Elim1Store]: treesize reduction 93, result has 14.7 percent of original size [2023-11-06 20:31:33,579 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 270 treesize of output 292 [2023-11-06 20:31:33,801 INFO L322 Elim1Store]: treesize reduction 93, result has 14.7 percent of original size [2023-11-06 20:31:33,801 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 247 treesize of output 269 [2023-11-06 20:31:34,534 INFO L322 Elim1Store]: treesize reduction 224, result has 20.3 percent of original size [2023-11-06 20:31:34,534 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 19 case distinctions, treesize of input 226 treesize of output 282 [2023-11-06 20:31:34,728 INFO L322 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-11-06 20:31:34,728 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 142 [2023-11-06 20:31:34,791 INFO L351 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 8 treesize of output 7 [2023-11-06 20:31:34,890 INFO L322 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2023-11-06 20:31:34,890 INFO L351 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 99 treesize of output 92 [2023-11-06 20:31:34,945 INFO L351 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-11-06 20:31:35,385 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 20:31:35,395 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 12 [2023-11-06 20:31:35,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 20:31:35,799 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 5 [2023-11-06 20:31:36,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 20:31:36,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 20:31:36,734 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 21