./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 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_f498e1b5-2360-48b1-8598-e65df49c671a/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f498e1b5-2360-48b1-8598-e65df49c671a/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f498e1b5-2360-48b1-8598-e65df49c671a/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f498e1b5-2360-48b1-8598-e65df49c671a/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f498e1b5-2360-48b1-8598-e65df49c671a/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f498e1b5-2360-48b1-8598-e65df49c671a/bin/utaipan-verify-mE87zJ7Ire --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 503a3e49b44041609ec1bba765b53912c88abb90ff278e61e68e863904faf4bb --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:16:53,836 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:16:53,953 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f498e1b5-2360-48b1-8598-e65df49c671a/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 21:16:53,961 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:16:53,962 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:16:53,991 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:16:53,992 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:16:53,993 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:16:53,993 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:16:53,994 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:16:53,995 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:16:53,995 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:16:53,996 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:16:53,996 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:16:53,997 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:16:53,998 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:16:53,998 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:16:53,999 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:16:53,999 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:16:54,000 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:16:54,001 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:16:54,002 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:16:54,003 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:16:54,003 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:16:54,004 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:16:54,004 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:16:54,005 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:16:54,005 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:16:54,006 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:16:54,006 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:16:54,007 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:16:54,007 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:16:54,008 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:16:54,008 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:16:54,009 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:16:54,009 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:16:54,010 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:16:54,010 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:16:54,011 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:16:54,011 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:16:54,011 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:16:54,012 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:16:54,012 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:16:54,012 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:16:54,012 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:16:54,013 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:16:54,013 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:16:54,013 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_f498e1b5-2360-48b1-8598-e65df49c671a/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f498e1b5-2360-48b1-8598-e65df49c671a/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 503a3e49b44041609ec1bba765b53912c88abb90ff278e61e68e863904faf4bb [2023-11-23 21:16:54,410 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:16:54,448 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:16:54,451 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:16:54,453 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:16:54,454 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:16:54,456 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f498e1b5-2360-48b1-8598-e65df49c671a/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i [2023-11-23 21:16:57,991 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:16:58,275 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:16:58,276 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f498e1b5-2360-48b1-8598-e65df49c671a/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i [2023-11-23 21:16:58,293 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f498e1b5-2360-48b1-8598-e65df49c671a/bin/utaipan-verify-mE87zJ7Ire/data/4b5a5dc38/2114774a6ae54f268276394eb72c4fc4/FLAG021fa1ca7 [2023-11-23 21:16:58,311 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f498e1b5-2360-48b1-8598-e65df49c671a/bin/utaipan-verify-mE87zJ7Ire/data/4b5a5dc38/2114774a6ae54f268276394eb72c4fc4 [2023-11-23 21:16:58,315 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:16:58,316 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:16:58,318 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:16:58,318 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:16:58,329 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:16:58,331 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:16:58" (1/1) ... [2023-11-23 21:16:58,332 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ac96f25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:58, skipping insertion in model container [2023-11-23 21:16:58,332 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:16:58" (1/1) ... [2023-11-23 21:16:58,415 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:16:58,810 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_f498e1b5-2360-48b1-8598-e65df49c671a/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22534,22547] [2023-11-23 21:16:58,818 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_f498e1b5-2360-48b1-8598-e65df49c671a/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22606,22619] [2023-11-23 21:16:58,822 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_f498e1b5-2360-48b1-8598-e65df49c671a/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22746,22759] [2023-11-23 21:16:58,824 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_f498e1b5-2360-48b1-8598-e65df49c671a/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22820,22833] [2023-11-23 21:16:58,837 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:16:58,852 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:16:58,923 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_f498e1b5-2360-48b1-8598-e65df49c671a/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22534,22547] [2023-11-23 21:16:58,925 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_f498e1b5-2360-48b1-8598-e65df49c671a/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22606,22619] [2023-11-23 21:16:58,927 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_f498e1b5-2360-48b1-8598-e65df49c671a/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22746,22759] [2023-11-23 21:16:58,929 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_f498e1b5-2360-48b1-8598-e65df49c671a/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22820,22833] [2023-11-23 21:16:58,937 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:16:58,977 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:16:58,978 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:58 WrapperNode [2023-11-23 21:16:58,978 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:16:58,979 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:16:58,979 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:16:58,979 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:16:58,986 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:58" (1/1) ... [2023-11-23 21:16:59,001 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:58" (1/1) ... [2023-11-23 21:16:59,030 INFO L138 Inliner]: procedures = 119, calls = 36, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 123 [2023-11-23 21:16:59,030 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:16:59,031 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:16:59,032 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:16:59,032 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:16:59,045 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:58" (1/1) ... [2023-11-23 21:16:59,046 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:58" (1/1) ... [2023-11-23 21:16:59,051 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:58" (1/1) ... [2023-11-23 21:16:59,051 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:58" (1/1) ... [2023-11-23 21:16:59,063 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:58" (1/1) ... [2023-11-23 21:16:59,077 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:58" (1/1) ... [2023-11-23 21:16:59,080 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:58" (1/1) ... [2023-11-23 21:16:59,081 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:58" (1/1) ... [2023-11-23 21:16:59,085 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:16:59,086 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:16:59,086 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:16:59,087 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:16:59,088 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:58" (1/1) ... [2023-11-23 21:16:59,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:16:59,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f498e1b5-2360-48b1-8598-e65df49c671a/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:16:59,154 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f498e1b5-2360-48b1-8598-e65df49c671a/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:16:59,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f498e1b5-2360-48b1-8598-e65df49c671a/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:16:59,202 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:16:59,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:16:59,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:16:59,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:16:59,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:16:59,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:16:59,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:16:59,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:16:59,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:16:59,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:16:59,345 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:16:59,348 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:16:59,607 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:16:59,727 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:16:59,727 INFO L309 CfgBuilder]: Removed 11 assume(true) statements. [2023-11-23 21:16:59,730 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:16:59 BoogieIcfgContainer [2023-11-23 21:16:59,730 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:16:59,733 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:16:59,733 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:16:59,738 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:16:59,738 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:16:58" (1/3) ... [2023-11-23 21:16:59,739 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e66816c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:16:59, skipping insertion in model container [2023-11-23 21:16:59,739 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:58" (2/3) ... [2023-11-23 21:16:59,740 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e66816c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:16:59, skipping insertion in model container [2023-11-23 21:16:59,740 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:16:59" (3/3) ... [2023-11-23 21:16:59,742 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-rb-sentinel-2.i [2023-11-23 21:16:59,766 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:16:59,767 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-23 21:16:59,853 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:16:59,862 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2adc15d6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:16:59,862 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-23 21:16:59,868 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) [2023-11-23 21:16:59,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-23 21:16:59,876 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:16:59,877 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-23 21:16:59,909 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)] === [2023-11-23 21:16:59,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:16:59,915 INFO L85 PathProgramCache]: Analyzing trace with hash 154845866, now seen corresponding path program 1 times [2023-11-23 21:16:59,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:16:59,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264699651] [2023-11-23 21:16:59,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:59,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:17:00,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:17:00,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:17:00,177 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:17:00,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264699651] [2023-11-23 21:17:00,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264699651] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:17:00,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:17:00,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:17:00,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012096333] [2023-11-23 21:17:00,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:17:00,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 21:17:00,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:17:00,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 21:17:00,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:17:00,230 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) [2023-11-23 21:17:00,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:17:00,325 INFO L93 Difference]: Finished difference Result 51 states and 81 transitions. [2023-11-23 21:17:00,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:17:00,330 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 [2023-11-23 21:17:00,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:17:00,341 INFO L225 Difference]: With dead ends: 51 [2023-11-23 21:17:00,341 INFO L226 Difference]: Without dead ends: 25 [2023-11-23 21:17:00,345 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 [2023-11-23 21:17:00,355 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2023-11-23 21:17:00,357 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] [2023-11-23 21:17:00,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-11-23 21:17:00,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-11-23 21:17:00,395 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) [2023-11-23 21:17:00,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2023-11-23 21:17:00,401 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 5 [2023-11-23 21:17:00,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:17:00,401 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2023-11-23 21:17:00,402 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) [2023-11-23 21:17:00,403 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2023-11-23 21:17:00,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-23 21:17:00,403 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:17:00,403 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-23 21:17:00,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:17:00,404 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)] === [2023-11-23 21:17:00,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:17:00,406 INFO L85 PathProgramCache]: Analyzing trace with hash 492885517, now seen corresponding path program 1 times [2023-11-23 21:17:00,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:17:00,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692548325] [2023-11-23 21:17:00,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:17:00,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:17:00,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:17:00,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:17:00,747 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:17:00,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692548325] [2023-11-23 21:17:00,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692548325] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:17:00,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:17:00,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:17:00,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735907981] [2023-11-23 21:17:00,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:17:00,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:17:00,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:17:00,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:17:00,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:17:00,754 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) [2023-11-23 21:17:00,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:17:00,849 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2023-11-23 21:17:00,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:17:00,850 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 [2023-11-23 21:17:00,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:17:00,851 INFO L225 Difference]: With dead ends: 31 [2023-11-23 21:17:00,851 INFO L226 Difference]: Without dead ends: 29 [2023-11-23 21:17:00,852 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 [2023-11-23 21:17:00,853 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 39 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:17:00,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 24 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:17:00,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-11-23 21:17:00,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 23. [2023-11-23 21:17:00,861 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) [2023-11-23 21:17:00,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2023-11-23 21:17:00,862 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 6 [2023-11-23 21:17:00,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:17:00,862 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2023-11-23 21:17:00,863 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) [2023-11-23 21:17:00,863 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2023-11-23 21:17:00,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-23 21:17:00,864 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:17:00,864 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:17:00,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:17:00,865 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)] === [2023-11-23 21:17:00,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:17:00,866 INFO L85 PathProgramCache]: Analyzing trace with hash -936802660, now seen corresponding path program 1 times [2023-11-23 21:17:00,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:17:00,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349392407] [2023-11-23 21:17:00,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:17:00,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:17:00,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:17:01,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:17:01,109 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:17:01,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349392407] [2023-11-23 21:17:01,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349392407] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:17:01,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:17:01,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:17:01,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068551731] [2023-11-23 21:17:01,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:17:01,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:17:01,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:17:01,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:17:01,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:17:01,114 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) [2023-11-23 21:17:01,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:17:01,397 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2023-11-23 21:17:01,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:17:01,398 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 [2023-11-23 21:17:01,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:17:01,406 INFO L225 Difference]: With dead ends: 48 [2023-11-23 21:17:01,406 INFO L226 Difference]: Without dead ends: 46 [2023-11-23 21:17:01,408 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 [2023-11-23 21:17:01,413 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 [2023-11-23 21:17:01,415 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] [2023-11-23 21:17:01,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-11-23 21:17:01,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 30. [2023-11-23 21:17:01,434 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) [2023-11-23 21:17:01,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2023-11-23 21:17:01,436 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 9 [2023-11-23 21:17:01,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:17:01,437 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2023-11-23 21:17:01,437 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) [2023-11-23 21:17:01,437 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2023-11-23 21:17:01,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-23 21:17:01,438 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:17:01,438 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:17:01,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:17:01,439 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)] === [2023-11-23 21:17:01,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:17:01,443 INFO L85 PathProgramCache]: Analyzing trace with hash -878991553, now seen corresponding path program 1 times [2023-11-23 21:17:01,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:17:01,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742451106] [2023-11-23 21:17:01,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:17:01,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:17:01,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:17:02,434 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:17:02,434 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:17:02,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742451106] [2023-11-23 21:17:02,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742451106] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:17:02,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000971363] [2023-11-23 21:17:02,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:17:02,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:17:02,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f498e1b5-2360-48b1-8598-e65df49c671a/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:17:02,442 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f498e1b5-2360-48b1-8598-e65df49c671a/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:17:02,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f498e1b5-2360-48b1-8598-e65df49c671a/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:17:02,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:17:02,623 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-23 21:17:02,635 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:17:02,722 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 [2023-11-23 21:17:02,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:17:02,744 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 1 [2023-11-23 21:17:02,756 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 13 treesize of output 9 [2023-11-23 21:17:03,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:17:03,020 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 182 treesize of output 176 [2023-11-23 21:17:03,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:17:03,079 INFO L378 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 [2023-11-23 21:17:03,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:17:03,133 INFO L378 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 154 treesize of output 174 [2023-11-23 21:17:03,286 INFO L349 Elim1Store]: treesize reduction 86, result has 26.5 percent of original size [2023-11-23 21:17:03,286 INFO L378 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 150 treesize of output 188 [2023-11-23 21:17:03,372 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-11-23 21:17:03,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 125 treesize of output 149 [2023-11-23 21:17:03,422 INFO L378 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 116 treesize of output 138 [2023-11-23 21:17:03,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:17:03,598 INFO L378 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 23 treesize of output 13 [2023-11-23 21:17:03,634 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:17:03,639 INFO L349 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-11-23 21:17:03,640 INFO L378 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 1 case distinctions, treesize of input 21 treesize of output 7 [2023-11-23 21:17:03,665 INFO L378 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 [2023-11-23 21:17:03,712 INFO L349 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2023-11-23 21:17:03,713 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 20 treesize of output 26 [2023-11-23 21:17:03,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:17:03,754 INFO L378 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 [2023-11-23 21:17:03,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:17:03,767 INFO L378 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 [2023-11-23 21:17:03,792 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:17:03,793 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:17:04,034 INFO L349 Elim1Store]: treesize reduction 20, result has 63.6 percent of original size [2023-11-23 21:17:04,035 INFO L378 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 193 treesize of output 230 [2023-11-23 21:17:04,105 INFO L349 Elim1Store]: treesize reduction 10, result has 70.6 percent of original size [2023-11-23 21:17:04,106 INFO L378 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 181 treesize of output 210 [2023-11-23 21:17:04,236 INFO L349 Elim1Store]: treesize reduction 20, result has 63.6 percent of original size [2023-11-23 21:17:04,237 INFO L378 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 172 treesize of output 209 [2023-11-23 21:17:04,463 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 25 treesize of output 23 [2023-11-23 21:17:04,484 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 40 treesize of output 36 [2023-11-23 21:17:04,506 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 40 treesize of output 36 [2023-11-23 21:17:04,699 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:17:04,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000971363] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:17:04,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [260965789] [2023-11-23 21:17:04,725 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-11-23 21:17:04,725 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:17:04,730 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:17:04,737 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:17:04,738 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:17:09,870 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:17:15,785 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '378#(and (<= 1 |#StackHeapBarrier|) (not (= |ULTIMATE.start_main_~null~0#1.base| |ULTIMATE.start_main_~end~0#1.base|)) (= |ULTIMATE.start_main_~null~0#1.offset| 0) (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))' at error location [2023-11-23 21:17:15,785 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 21:17:15,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:17:15,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2023-11-23 21:17:15,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442569450] [2023-11-23 21:17:15,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:17:15,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 21:17:15,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:17:15,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 21:17:15,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2023-11-23 21:17:15,788 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:17:18,112 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-23 21:17:20,156 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-23 21:17:20,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:17:20,419 INFO L93 Difference]: Finished difference Result 62 states and 70 transitions. [2023-11-23 21:17:20,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 21:17:20,420 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-23 21:17:20,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:17:20,421 INFO L225 Difference]: With dead ends: 62 [2023-11-23 21:17:20,421 INFO L226 Difference]: Without dead ends: 60 [2023-11-23 21:17:20,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2023-11-23 21:17:20,422 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 61 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 8 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-11-23 21:17:20,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 99 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 68 Invalid, 2 Unknown, 0 Unchecked, 4.4s Time] [2023-11-23 21:17:20,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-11-23 21:17:20,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 34. [2023-11-23 21:17:20,432 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) [2023-11-23 21:17:20,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2023-11-23 21:17:20,434 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 11 [2023-11-23 21:17:20,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:17:20,434 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2023-11-23 21:17:20,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:17:20,435 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2023-11-23 21:17:20,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-23 21:17:20,435 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:17:20,436 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:17:20,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f498e1b5-2360-48b1-8598-e65df49c671a/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:17:20,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f498e1b5-2360-48b1-8598-e65df49c671a/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:17:20,652 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)] === [2023-11-23 21:17:20,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:17:20,653 INFO L85 PathProgramCache]: Analyzing trace with hash -69079933, now seen corresponding path program 1 times [2023-11-23 21:17:20,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:17:20,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224900381] [2023-11-23 21:17:20,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:17:20,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:17:20,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:17:20,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:17:20,729 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:17:20,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224900381] [2023-11-23 21:17:20,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224900381] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:17:20,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:17:20,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:17:20,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119494499] [2023-11-23 21:17:20,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:17:20,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:17:20,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:17:20,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:17:20,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:17:20,732 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) [2023-11-23 21:17:20,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:17:20,878 INFO L93 Difference]: Finished difference Result 49 states and 56 transitions. [2023-11-23 21:17:20,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:17:20,879 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 [2023-11-23 21:17:20,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:17:20,880 INFO L225 Difference]: With dead ends: 49 [2023-11-23 21:17:20,880 INFO L226 Difference]: Without dead ends: 37 [2023-11-23 21:17:20,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:17:20,881 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 4 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:17:20,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 55 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:17:20,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-11-23 21:17:20,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2023-11-23 21:17:20,890 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) [2023-11-23 21:17:20,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2023-11-23 21:17:20,891 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 13 [2023-11-23 21:17:20,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:17:20,891 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2023-11-23 21:17:20,892 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) [2023-11-23 21:17:20,892 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2023-11-23 21:17:20,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-23 21:17:20,893 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:17:20,893 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:17:20,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 21:17:20,893 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)] === [2023-11-23 21:17:20,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:17:20,894 INFO L85 PathProgramCache]: Analyzing trace with hash -2124201403, now seen corresponding path program 2 times [2023-11-23 21:17:20,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:17:20,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001890389] [2023-11-23 21:17:20,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:17:20,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:17:21,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:17:23,763 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:17:23,763 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:17:23,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001890389] [2023-11-23 21:17:23,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001890389] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:17:23,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376945141] [2023-11-23 21:17:23,763 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 21:17:23,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:17:23,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f498e1b5-2360-48b1-8598-e65df49c671a/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:17:23,765 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f498e1b5-2360-48b1-8598-e65df49c671a/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:17:23,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f498e1b5-2360-48b1-8598-e65df49c671a/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 21:17:25,380 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-23 21:17:25,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 21:17:25,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 55 conjunts are in the unsatisfiable core [2023-11-23 21:17:25,395 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:17:25,409 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 [2023-11-23 21:17:25,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:17:25,423 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 1 [2023-11-23 21:17:25,434 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 [2023-11-23 21:17:25,653 INFO L349 Elim1Store]: treesize reduction 90, result has 23.1 percent of original size [2023-11-23 21:17:25,653 INFO L378 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 184 treesize of output 218 [2023-11-23 21:17:25,682 INFO L378 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 165 treesize of output 187 [2023-11-23 21:17:25,705 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 155 [2023-11-23 21:17:25,731 INFO L378 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 145 treesize of output 165 [2023-11-23 21:17:25,781 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-11-23 21:17:25,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 131 treesize of output 155 [2023-11-23 21:17:25,807 INFO L378 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 122 treesize of output 144 [2023-11-23 21:17:25,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:17:25,975 INFO L378 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 [2023-11-23 21:17:26,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:17:26,205 INFO L378 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 [2023-11-23 21:17:26,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:17:26,305 INFO L378 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 112 [2023-11-23 21:17:26,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:17:26,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 11 [2023-11-23 21:17:26,566 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 7 [2023-11-23 21:17:26,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:17:26,685 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-11-23 21:17:26,685 INFO L378 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 [2023-11-23 21:17:27,105 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-11-23 21:17:27,106 INFO L378 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 167 treesize of output 191 [2023-11-23 21:17:27,395 INFO L349 Elim1Store]: treesize reduction 220, result has 21.7 percent of original size [2023-11-23 21:17:27,396 INFO L378 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 263 treesize of output 323 [2023-11-23 21:17:27,462 INFO L349 Elim1Store]: treesize reduction 34, result has 12.8 percent of original size [2023-11-23 21:17:27,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 249 treesize of output 271 [2023-11-23 21:17:27,520 INFO L349 Elim1Store]: treesize reduction 42, result has 10.6 percent of original size [2023-11-23 21:17:27,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 234 treesize of output 254 [2023-11-23 21:17:27,588 INFO L349 Elim1Store]: treesize reduction 34, result has 12.8 percent of original size [2023-11-23 21:17:27,588 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 212 treesize of output 234 [2023-11-23 21:17:27,687 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-11-23 21:17:27,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:17:27,871 INFO L378 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 [2023-11-23 21:17:28,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:17:28,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:17:28,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 16 [2023-11-23 21:17:28,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:17:28,518 INFO L378 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 [2023-11-23 21:17:28,747 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 7 [2023-11-23 21:17:28,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 14 [2023-11-23 21:17:29,793 INFO L349 Elim1Store]: treesize reduction 78, result has 28.4 percent of original size [2023-11-23 21:17:29,794 INFO L378 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 334 treesize of output 371 [2023-11-23 21:17:30,053 INFO L349 Elim1Store]: treesize reduction 198, result has 18.2 percent of original size [2023-11-23 21:17:30,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 case distinctions, treesize of input 322 treesize of output 364 [2023-11-23 21:17:30,158 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-11-23 21:17:30,158 INFO L378 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 143 treesize of output 167 [2023-11-23 21:17:30,840 INFO L349 Elim1Store]: treesize reduction 367, result has 23.1 percent of original size [2023-11-23 21:17:30,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 34 case distinctions, treesize of input 319 treesize of output 424 [2023-11-23 21:17:31,035 INFO L349 Elim1Store]: treesize reduction 78, result has 28.4 percent of original size [2023-11-23 21:17:31,036 INFO L378 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 4 case distinctions, treesize of input 249 treesize of output 286 [2023-11-23 21:17:31,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 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 24 treesize of output 47 [2023-11-23 21:17:31,217 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-11-23 21:17:31,902 INFO L378 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 106 [2023-11-23 21:17:33,784 INFO L378 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 11 treesize of output 7 [2023-11-23 21:17:34,640 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 36 treesize of output 32 [2023-11-23 21:17:34,659 INFO L378 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 36 treesize of output 32 [2023-11-23 21:17:34,683 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 36 treesize of output 32 [2023-11-23 21:17:36,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:17:36,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:17:36,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 11 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 36 [2023-11-23 21:17:36,359 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:17:36,360 INFO L378 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 21 treesize of output 3 [2023-11-23 21:17:37,242 INFO L349 Elim1Store]: treesize reduction 153, result has 26.1 percent of original size [2023-11-23 21:17:37,242 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 13 case distinctions, treesize of input 149 treesize of output 202 [2023-11-23 21:17:38,347 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:17:38,347 INFO L378 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 21 treesize of output 3 [2023-11-23 21:17:38,461 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:17:38,462 INFO L378 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 21 treesize of output 3 [2023-11-23 21:17:40,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:17:40,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:17:40,204 INFO L349 Elim1Store]: treesize reduction 68, result has 6.8 percent of original size [2023-11-23 21:17:40,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 47 treesize of output 26 [2023-11-23 21:17:40,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 21 [2023-11-23 21:17:40,601 INFO L349 Elim1Store]: treesize reduction 45, result has 10.0 percent of original size [2023-11-23 21:17:40,602 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 47 treesize of output 26 [2023-11-23 21:17:40,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 40 treesize of output 31 [2023-11-23 21:17:40,711 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:17:40,712 INFO L378 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 21 treesize of output 3 [2023-11-23 21:17:40,824 INFO L349 Elim1Store]: treesize reduction 17, result has 19.0 percent of original size [2023-11-23 21:17:40,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 40 [2023-11-23 21:17:40,841 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:17:40,842 INFO L378 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 21 treesize of output 3 [2023-11-23 21:17:41,425 INFO L349 Elim1Store]: treesize reduction 153, result has 26.1 percent of original size [2023-11-23 21:17:41,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 13 case distinctions, treesize of input 149 treesize of output 202 [2023-11-23 21:17:42,645 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:17:42,646 INFO L378 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 21 treesize of output 3 [2023-11-23 21:17:43,031 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:17:43,032 INFO L378 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 21 treesize of output 3 [2023-11-23 21:17:45,187 INFO L349 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2023-11-23 21:17:45,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 16 [2023-11-23 21:17:45,487 INFO L349 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2023-11-23 21:17:45,488 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 31 [2023-11-23 21:17:45,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 11 [2023-11-23 21:17:45,607 INFO L349 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2023-11-23 21:17:45,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 64 treesize of output 36 [2023-11-23 21:17:45,716 INFO L349 Elim1Store]: treesize reduction 17, result has 19.0 percent of original size [2023-11-23 21:17:45,716 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 40 [2023-11-23 21:17:45,729 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:17:45,730 INFO L378 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 21 treesize of output 3