./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-simple/sll2c_prepend_equal.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6c8c7d-8088-45f7-b4fe-cf5f68f16d57/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6c8c7d-8088-45f7-b4fe-cf5f68f16d57/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6c8c7d-8088-45f7-b4fe-cf5f68f16d57/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6c8c7d-8088-45f7-b4fe-cf5f68f16d57/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-simple/sll2c_prepend_equal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6c8c7d-8088-45f7-b4fe-cf5f68f16d57/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6c8c7d-8088-45f7-b4fe-cf5f68f16d57/bin/utaipan-EQgc7hIp5V --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f682d6a9f9df80cf11b356f08ea6be5ab5adaf1b414fc8a476877af8610cc552 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:13:40,259 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:13:40,262 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:13:40,297 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:13:40,297 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:13:40,299 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:13:40,301 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:13:40,303 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:13:40,305 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:13:40,307 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:13:40,308 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:13:40,310 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:13:40,310 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:13:40,312 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:13:40,313 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:13:40,315 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:13:40,316 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:13:40,318 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:13:40,320 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:13:40,323 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:13:40,325 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:13:40,326 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:13:40,328 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:13:40,329 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:13:40,333 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:13:40,333 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:13:40,334 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:13:40,335 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:13:40,336 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:13:40,337 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:13:40,337 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:13:40,339 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:13:40,340 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:13:40,341 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:13:40,342 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:13:40,343 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:13:40,344 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:13:40,344 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:13:40,345 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:13:40,346 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:13:40,347 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:13:40,348 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6c8c7d-8088-45f7-b4fe-cf5f68f16d57/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 02:13:40,375 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:13:40,376 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:13:40,376 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:13:40,377 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:13:40,378 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:13:40,378 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:13:40,378 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:13:40,379 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:13:40,379 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:13:40,380 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:13:40,380 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:13:40,381 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:13:40,381 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:13:40,382 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:13:40,382 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:13:40,383 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:13:40,383 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:13:40,383 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:13:40,384 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:13:40,385 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:13:40,385 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:13:40,386 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:13:40,386 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:13:40,387 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:13:40,387 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:13:40,388 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:13:40,388 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:13:40,388 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:13:40,389 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:13:40,389 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:13:40,389 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:13:40,390 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:13:40,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:13:40,390 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:13:40,391 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:13:40,391 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:13:40,391 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:13:40,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:13:40,392 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:13:40,392 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:13:40,392 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:13:40,393 INFO L138 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_2a6c8c7d-8088-45f7-b4fe-cf5f68f16d57/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6c8c7d-8088-45f7-b4fe-cf5f68f16d57/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f682d6a9f9df80cf11b356f08ea6be5ab5adaf1b414fc8a476877af8610cc552 [2021-11-23 02:13:40,615 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:13:40,635 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:13:40,637 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:13:40,638 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:13:40,639 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:13:40,640 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6c8c7d-8088-45f7-b4fe-cf5f68f16d57/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/list-simple/sll2c_prepend_equal.i [2021-11-23 02:13:40,722 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6c8c7d-8088-45f7-b4fe-cf5f68f16d57/bin/utaipan-EQgc7hIp5V/data/ceb3fade6/23379ce7bf684083b1f781a7000cccdd/FLAG039ef432e [2021-11-23 02:13:41,319 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:13:41,320 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6c8c7d-8088-45f7-b4fe-cf5f68f16d57/sv-benchmarks/c/list-simple/sll2c_prepend_equal.i [2021-11-23 02:13:41,332 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6c8c7d-8088-45f7-b4fe-cf5f68f16d57/bin/utaipan-EQgc7hIp5V/data/ceb3fade6/23379ce7bf684083b1f781a7000cccdd/FLAG039ef432e [2021-11-23 02:13:41,622 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6c8c7d-8088-45f7-b4fe-cf5f68f16d57/bin/utaipan-EQgc7hIp5V/data/ceb3fade6/23379ce7bf684083b1f781a7000cccdd [2021-11-23 02:13:41,624 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:13:41,626 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:13:41,628 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:13:41,628 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:13:41,631 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:13:41,632 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:13:41" (1/1) ... [2021-11-23 02:13:41,633 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15d1e6cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:41, skipping insertion in model container [2021-11-23 02:13:41,634 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:13:41" (1/1) ... [2021-11-23 02:13:41,641 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:13:41,699 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:13:42,059 WARN L230 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_2a6c8c7d-8088-45f7-b4fe-cf5f68f16d57/sv-benchmarks/c/list-simple/sll2c_prepend_equal.i[24458,24471] [2021-11-23 02:13:42,067 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:13:42,080 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:13:42,131 WARN L230 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_2a6c8c7d-8088-45f7-b4fe-cf5f68f16d57/sv-benchmarks/c/list-simple/sll2c_prepend_equal.i[24458,24471] [2021-11-23 02:13:42,132 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:13:42,164 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:13:42,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:42 WrapperNode [2021-11-23 02:13:42,164 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:13:42,165 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:13:42,166 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:13:42,166 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:13:42,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:42" (1/1) ... [2021-11-23 02:13:42,208 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:42" (1/1) ... [2021-11-23 02:13:42,233 INFO L137 Inliner]: procedures = 127, calls = 43, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 137 [2021-11-23 02:13:42,234 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:13:42,234 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:13:42,235 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:13:42,235 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:13:42,242 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:42" (1/1) ... [2021-11-23 02:13:42,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:42" (1/1) ... [2021-11-23 02:13:42,247 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:42" (1/1) ... [2021-11-23 02:13:42,247 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:42" (1/1) ... [2021-11-23 02:13:42,257 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:42" (1/1) ... [2021-11-23 02:13:42,262 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:42" (1/1) ... [2021-11-23 02:13:42,264 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:42" (1/1) ... [2021-11-23 02:13:42,267 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:13:42,268 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:13:42,269 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:13:42,269 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:13:42,270 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:42" (1/1) ... [2021-11-23 02:13:42,278 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:13:42,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6c8c7d-8088-45f7-b4fe-cf5f68f16d57/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:13:42,301 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6c8c7d-8088-45f7-b4fe-cf5f68f16d57/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:13:42,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6c8c7d-8088-45f7-b4fe-cf5f68f16d57/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:13:42,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 02:13:42,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 02:13:42,347 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2021-11-23 02:13:42,347 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2021-11-23 02:13:42,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 02:13:42,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:13:42,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 02:13:42,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 02:13:42,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 02:13:42,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:13:42,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 02:13:42,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:13:42,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:13:42,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:13:42,446 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:13:42,448 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:13:42,718 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:13:42,759 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:13:42,759 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-23 02:13:42,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:13:42 BoogieIcfgContainer [2021-11-23 02:13:42,762 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:13:42,763 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:13:42,764 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:13:42,767 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:13:42,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:13:41" (1/3) ... [2021-11-23 02:13:42,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dea45c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:13:42, skipping insertion in model container [2021-11-23 02:13:42,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:42" (2/3) ... [2021-11-23 02:13:42,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dea45c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:13:42, skipping insertion in model container [2021-11-23 02:13:42,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:13:42" (3/3) ... [2021-11-23 02:13:42,770 INFO L111 eAbstractionObserver]: Analyzing ICFG sll2c_prepend_equal.i [2021-11-23 02:13:42,775 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:13:42,775 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:13:42,822 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:13:42,828 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 02:13:42,829 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:13:42,845 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 02:13:42,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-23 02:13:42,851 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:13:42,851 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:13:42,852 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:13:42,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:13:42,858 INFO L85 PathProgramCache]: Analyzing trace with hash -605451759, now seen corresponding path program 1 times [2021-11-23 02:13:42,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:13:42,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102153378] [2021-11-23 02:13:42,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:13:42,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:13:42,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:13:43,075 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 02:13:43,076 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:13:43,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102153378] [2021-11-23 02:13:43,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102153378] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:13:43,077 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:13:43,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:13:43,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424932546] [2021-11-23 02:13:43,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:13:43,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:13:43,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:13:43,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:13:43,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:13:43,114 INFO L87 Difference]: Start difference. First operand has 28 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 02:13:43,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:13:43,158 INFO L93 Difference]: Finished difference Result 53 states and 76 transitions. [2021-11-23 02:13:43,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:13:43,160 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2021-11-23 02:13:43,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:13:43,167 INFO L225 Difference]: With dead ends: 53 [2021-11-23 02:13:43,168 INFO L226 Difference]: Without dead ends: 25 [2021-11-23 02:13:43,171 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:13:43,174 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 1 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:13:43,175 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 57 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:13:43,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-11-23 02:13:43,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2021-11-23 02:13:43,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 02:13:43,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 29 transitions. [2021-11-23 02:13:43,216 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 29 transitions. Word has length 17 [2021-11-23 02:13:43,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:13:43,216 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 29 transitions. [2021-11-23 02:13:43,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 02:13:43,219 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 29 transitions. [2021-11-23 02:13:43,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-23 02:13:43,221 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:13:43,221 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:13:43,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:13:43,223 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:13:43,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:13:43,227 INFO L85 PathProgramCache]: Analyzing trace with hash -948913763, now seen corresponding path program 1 times [2021-11-23 02:13:43,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:13:43,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259114411] [2021-11-23 02:13:43,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:13:43,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:13:43,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:13:43,687 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 02:13:43,687 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:13:43,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259114411] [2021-11-23 02:13:43,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259114411] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:13:43,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518633611] [2021-11-23 02:13:43,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:13:43,689 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:13:43,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6c8c7d-8088-45f7-b4fe-cf5f68f16d57/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:13:43,695 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6c8c7d-8088-45f7-b4fe-cf5f68f16d57/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:13:43,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6c8c7d-8088-45f7-b4fe-cf5f68f16d57/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:13:43,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:13:43,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 38 conjunts are in the unsatisfiable core [2021-11-23 02:13:43,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:13:44,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 12 treesize of output 8 [2021-11-23 02:13:45,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:45,148 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-11-23 02:13:45,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19 [2021-11-23 02:13:45,243 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-23 02:13:45,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-11-23 02:13:45,273 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 02:13:45,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:13:47,431 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base_13| Int) (|v_node_create_~temp~0#1.offset_11| Int) (v_DerPreprocessor_1 Int)) (or (not (= (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base_13| (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base_13|) |v_node_create_~temp~0#1.offset_11| 0) (+ |v_node_create_~temp~0#1.offset_11| 4) v_DerPreprocessor_1)) |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset|) 0)) (<= |c_#StackHeapBarrier| |v_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base_13|))) is different from false [2021-11-23 02:13:47,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518633611] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:13:47,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [745571401] [2021-11-23 02:13:47,452 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2021-11-23 02:13:47,453 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:13:47,457 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:13:47,468 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:13:47,469 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:13:47,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:47,534 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-23 02:13:47,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-23 02:13:47,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:47,551 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 17 treesize of output 22 [2021-11-23 02:13:47,609 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 12 treesize of output 9 [2021-11-23 02:13:47,614 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 6 treesize of output 5 [2021-11-23 02:13:47,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:47,631 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2021-11-23 02:13:47,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:47,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2021-11-23 02:13:47,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:47,663 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2021-11-23 02:13:47,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:47,708 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-11-23 02:13:47,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:47,729 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-11-23 02:13:47,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:47,831 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-11-23 02:13:47,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:47,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-11-23 02:13:48,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2021-11-23 02:13:48,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2021-11-23 02:13:48,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2021-11-23 02:13:48,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 9 treesize of output 3 [2021-11-23 02:13:48,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2021-11-23 02:13:48,427 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:13:48,431 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:13:48,435 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:13:48,438 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:13:48,443 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:13:48,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2021-11-23 02:13:48,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2021-11-23 02:13:48,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2021-11-23 02:13:48,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2021-11-23 02:13:48,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2021-11-23 02:13:48,853 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:13:48,856 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:13:48,858 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:13:48,864 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:13:48,866 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:13:48,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2021-11-23 02:13:48,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:48,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-23 02:13:48,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2021-11-23 02:13:49,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:49,230 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 168 treesize of output 152 [2021-11-23 02:13:49,242 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:13:49,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 153 treesize of output 141 [2021-11-23 02:13:49,253 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:13:49,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 122 [2021-11-23 02:13:49,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 02:13:49,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 1 [2021-11-23 02:13:49,541 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 02:13:49,765 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:13:49,770 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 02:13:49,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2021-11-23 02:13:49,796 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:13:49,802 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 02:13:49,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2021-11-23 02:13:50,076 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:13:50,082 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 02:13:50,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2021-11-23 02:13:50,096 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:13:50,101 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 02:13:50,101 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2021-11-23 02:13:50,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:50,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 269 treesize of output 251 [2021-11-23 02:13:50,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:50,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 254 treesize of output 236 [2021-11-23 02:13:50,280 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:13:50,302 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-23 02:13:50,302 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 239 treesize of output 214 [2021-11-23 02:13:50,315 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:13:50,333 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-23 02:13:50,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 211 treesize of output 186 [2021-11-23 02:13:50,670 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 14 for LOIs [2021-11-23 02:13:50,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 6 treesize of output 5 [2021-11-23 02:13:50,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 12 treesize of output 9 [2021-11-23 02:13:50,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:50,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2021-11-23 02:13:50,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:50,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2021-11-23 02:13:50,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:50,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2021-11-23 02:13:50,733 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:13:54,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [745571401] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:13:54,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-23 02:13:54,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [13, 13] total 34 [2021-11-23 02:13:54,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856134177] [2021-11-23 02:13:54,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:13:54,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-23 02:13:54,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:13:54,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-23 02:13:54,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1076, Unknown=1, NotChecked=66, Total=1260 [2021-11-23 02:13:54,253 INFO L87 Difference]: Start difference. First operand 23 states and 29 transitions. Second operand has 16 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 11 states have internal predecessors, (13), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 02:13:54,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:13:54,727 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2021-11-23 02:13:54,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-23 02:13:54,728 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 11 states have internal predecessors, (13), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 23 [2021-11-23 02:13:54,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:13:54,730 INFO L225 Difference]: With dead ends: 34 [2021-11-23 02:13:54,731 INFO L226 Difference]: Without dead ends: 32 [2021-11-23 02:13:54,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=117, Invalid=1076, Unknown=1, NotChecked=66, Total=1260 [2021-11-23 02:13:54,733 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 36 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:13:54,733 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 60 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 02:13:54,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-11-23 02:13:54,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 26. [2021-11-23 02:13:54,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 02:13:54,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2021-11-23 02:13:54,749 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 23 [2021-11-23 02:13:54,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:13:54,751 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2021-11-23 02:13:54,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 11 states have internal predecessors, (13), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 02:13:54,751 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2021-11-23 02:13:54,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-23 02:13:54,757 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:13:54,758 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:13:54,780 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6c8c7d-8088-45f7-b4fe-cf5f68f16d57/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-23 02:13:54,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6c8c7d-8088-45f7-b4fe-cf5f68f16d57/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:13:54,965 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:13:54,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:13:54,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1371241065, now seen corresponding path program 1 times [2021-11-23 02:13:54,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:13:54,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811621498] [2021-11-23 02:13:54,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:13:54,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:13:55,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:13:55,249 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 02:13:55,249 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:13:55,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811621498] [2021-11-23 02:13:55,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811621498] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:13:55,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196595137] [2021-11-23 02:13:55,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:13:55,249 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:13:55,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6c8c7d-8088-45f7-b4fe-cf5f68f16d57/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:13:55,250 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6c8c7d-8088-45f7-b4fe-cf5f68f16d57/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:13:55,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6c8c7d-8088-45f7-b4fe-cf5f68f16d57/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 02:13:55,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:13:55,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 38 conjunts are in the unsatisfiable core [2021-11-23 02:13:55,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:13:55,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 12 treesize of output 8 [2021-11-23 02:13:57,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:57,053 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-11-23 02:13:57,053 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19 [2021-11-23 02:13:57,111 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-23 02:13:57,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-11-23 02:13:57,142 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 02:13:57,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:13:59,235 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_node_create_~temp~0#1.offset_14| Int) (|v_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base_18| Int) (v_DerPreprocessor_4 Int)) (or (<= |c_#StackHeapBarrier| |v_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base_18|) (not (= (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base_18| (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base_18|) |v_node_create_~temp~0#1.offset_14| 0) (+ |v_node_create_~temp~0#1.offset_14| 4) v_DerPreprocessor_4)) |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset|) 0)))) is different from false [2021-11-23 02:13:59,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196595137] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:13:59,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2146953302] [2021-11-23 02:13:59,240 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2021-11-23 02:13:59,240 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:13:59,240 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:13:59,241 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:13:59,241 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:13:59,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:59,292 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-23 02:13:59,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2021-11-23 02:13:59,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:59,324 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-23 02:13:59,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-23 02:13:59,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 12 treesize of output 9 [2021-11-23 02:13:59,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 6 treesize of output 5 [2021-11-23 02:13:59,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:59,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2021-11-23 02:13:59,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:59,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2021-11-23 02:13:59,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:59,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2021-11-23 02:13:59,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:59,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-11-23 02:13:59,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:59,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-11-23 02:13:59,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:59,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-11-23 02:13:59,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:13:59,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-11-23 02:13:59,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2021-11-23 02:13:59,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2021-11-23 02:13:59,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2021-11-23 02:13:59,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2021-11-23 02:13:59,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2021-11-23 02:13:59,843 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:13:59,845 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:13:59,847 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:13:59,850 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:13:59,852 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:14:00,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 9 treesize of output 3 [2021-11-23 02:14:00,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2021-11-23 02:14:00,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2021-11-23 02:14:00,069 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2021-11-23 02:14:00,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2021-11-23 02:14:00,090 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:14:00,092 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:14:00,094 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:14:00,096 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:14:00,099 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:14:00,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2021-11-23 02:14:00,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:00,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-23 02:14:00,168 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2021-11-23 02:14:00,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:00,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 168 treesize of output 152 [2021-11-23 02:14:00,391 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:14:00,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 153 treesize of output 141 [2021-11-23 02:14:00,401 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:14:00,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 146 treesize of output 134 [2021-11-23 02:14:00,614 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 02:14:00,632 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 02:14:00,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 1 [2021-11-23 02:14:00,924 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:14:00,933 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 02:14:00,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2021-11-23 02:14:00,946 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:14:00,951 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 02:14:00,951 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2021-11-23 02:14:01,205 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:14:01,210 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 02:14:01,210 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2021-11-23 02:14:01,223 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:14:01,228 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 02:14:01,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2021-11-23 02:14:01,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:01,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 265 treesize of output 249 [2021-11-23 02:14:01,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:01,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 250 treesize of output 234 [2021-11-23 02:14:01,378 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:14:01,379 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:14:01,398 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-23 02:14:01,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 235 treesize of output 217 [2021-11-23 02:14:01,410 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:14:01,411 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:14:01,427 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-23 02:14:01,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 214 treesize of output 196 [2021-11-23 02:14:01,861 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 14 for LOIs [2021-11-23 02:14:01,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 12 treesize of output 9 [2021-11-23 02:14:01,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 6 treesize of output 5 [2021-11-23 02:14:01,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:01,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2021-11-23 02:14:01,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:01,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2021-11-23 02:14:01,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:01,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2021-11-23 02:14:01,913 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:14:06,143 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '467#(and (<= 2 |ULTIMATE.start_sll_circular_create_#in~len#1|) (< |ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base| |#StackHeapBarrier|) (= |ULTIMATE.start_main_~count~0#1| 1) (= |ULTIMATE.start_sll_circular_prepend_#in~data#1| |ULTIMATE.start_sll_circular_prepend_~data#1|) (= |ULTIMATE.start_sll_circular_prepend_#in~head#1.base| |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_sll_circular_create_#in~data#1| 1) (<= |ULTIMATE.start_sll_circular_prepend_#in~head#1.offset| 0) (<= |ULTIMATE.start_sll_circular_create_~last~0#1.offset| 0) (= |ULTIMATE.start_main_~ptr~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|)) (= |ULTIMATE.start_sll_circular_prepend_#in~head#1.base| |ULTIMATE.start_sll_circular_prepend_~head#1.base|) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_sll_circular_prepend_~head#1.base|) |ULTIMATE.start_sll_circular_prepend_~head#1.offset|) |ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base|) (<= |ULTIMATE.start_sll_circular_prepend_~data#1| 1) (<= |ULTIMATE.start_sll_circular_create_#res#1.offset| 0) (= 8 (select |#length| |ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base|)) (<= 0 |ULTIMATE.start_sll_circular_prepend_~head#1.offset|) (<= |ULTIMATE.start_sll_circular_create_#in~len#1| 2) (<= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_sll_circular_create_~last~0#1.offset|) (<= 1 |ULTIMATE.start_sll_circular_create_~data#1|) (<= 0 |ULTIMATE.start_sll_circular_create_~head~0#1.offset|) (<= 1 |ULTIMATE.start_sll_circular_create_#in~data#1|) (<= |ULTIMATE.start_sll_circular_create_~len#1| 1) (= |ULTIMATE.start_sll_circular_create_~head~0#1.base| |ULTIMATE.start_sll_circular_create_#res#1.base|) (<= |ULTIMATE.start_sll_circular_create_~data#1| 1) (<= 0 |ULTIMATE.start_sll_circular_prepend_#in~head#1.offset|) (<= 0 |ULTIMATE.start_sll_circular_prepend_~new_head~1#1.offset|) (= (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|)) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|)) |ULTIMATE.start_main_~ptr~0#1.offset|) (<= |ULTIMATE.start_sll_circular_prepend_~new_head~1#1.offset| 0) (<= |ULTIMATE.start_sll_circular_create_~head~0#1.offset| 0) (= |ULTIMATE.start_main_~len~0#1| 2) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= |ULTIMATE.start_sll_circular_prepend_~head#1.offset| 0) (not (= |ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base| 0)) (= 1 (select |#valid| |ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base|)) (= |ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base|) |ULTIMATE.start_sll_circular_prepend_~new_head~1#1.offset|)) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_sll_circular_prepend_~head#1.base|) |ULTIMATE.start_sll_circular_prepend_~head#1.offset|) |ULTIMATE.start_sll_circular_prepend_~new_head~1#1.offset|) (<= 0 |#NULL.offset|) (= (select (select |#memory_int| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|)) (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|) 4)) |ULTIMATE.start_main_~data~0#1|) (<= 0 |ULTIMATE.start_sll_circular_create_#res#1.offset|) (<= 1 |ULTIMATE.start_main_~data~0#1|) (= |ULTIMATE.start_sll_circular_prepend_#in~data#1| |ULTIMATE.start_main_~data~0#1|) (<= 0 |ULTIMATE.start_sll_circular_prepend_#in~head#1.base|) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base|) 0) |ULTIMATE.start_sll_circular_prepend_~new_head~1#1.offset|) (= |#NULL.base| 0))' at error location [2021-11-23 02:14:06,143 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:14:06,143 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 02:14:06,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2021-11-23 02:14:06,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731556140] [2021-11-23 02:14:06,143 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 02:14:06,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-23 02:14:06,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:14:06,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-23 02:14:06,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1205, Unknown=1, NotChecked=70, Total=1406 [2021-11-23 02:14:06,146 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand has 20 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 4 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-23 02:14:07,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:14:07,386 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2021-11-23 02:14:07,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 02:14:07,395 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 4 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 25 [2021-11-23 02:14:07,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:14:07,398 INFO L225 Difference]: With dead ends: 33 [2021-11-23 02:14:07,398 INFO L226 Difference]: Without dead ends: 24 [2021-11-23 02:14:07,399 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 457 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=157, Invalid=1486, Unknown=1, NotChecked=78, Total=1722 [2021-11-23 02:14:07,400 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 3 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:14:07,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 191 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 113 Invalid, 0 Unknown, 29 Unchecked, 0.1s Time] [2021-11-23 02:14:07,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-11-23 02:14:07,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2021-11-23 02:14:07,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 18 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 02:14:07,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2021-11-23 02:14:07,417 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 25 [2021-11-23 02:14:07,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:14:07,417 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2021-11-23 02:14:07,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 4 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-23 02:14:07,418 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2021-11-23 02:14:07,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-23 02:14:07,419 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:14:07,419 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:14:07,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6c8c7d-8088-45f7-b4fe-cf5f68f16d57/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 02:14:07,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6c8c7d-8088-45f7-b4fe-cf5f68f16d57/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:14:07,635 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:14:07,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:14:07,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1950307874, now seen corresponding path program 1 times [2021-11-23 02:14:07,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:14:07,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496980961] [2021-11-23 02:14:07,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:14:07,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:14:07,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:14:08,262 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:14:08,263 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:14:08,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496980961] [2021-11-23 02:14:08,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496980961] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:14:08,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136310514] [2021-11-23 02:14:08,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:14:08,263 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:14:08,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6c8c7d-8088-45f7-b4fe-cf5f68f16d57/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:14:08,270 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6c8c7d-8088-45f7-b4fe-cf5f68f16d57/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:14:08,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6c8c7d-8088-45f7-b4fe-cf5f68f16d57/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 02:14:08,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:14:08,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 74 conjunts are in the unsatisfiable core [2021-11-23 02:14:08,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:14:08,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 02:14:08,583 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-23 02:14:08,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-23 02:14:08,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 02:14:08,734 INFO L354 Elim1Store]: treesize reduction 53, result has 22.1 percent of original size [2021-11-23 02:14:08,734 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 43 [2021-11-23 02:14:08,829 INFO L354 Elim1Store]: treesize reduction 32, result has 28.9 percent of original size [2021-11-23 02:14:08,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 73 treesize of output 40 [2021-11-23 02:14:08,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 31 treesize of output 27 [2021-11-23 02:14:08,841 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 02:14:08,841 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 23 [2021-11-23 02:14:10,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:11,020 INFO L354 Elim1Store]: treesize reduction 230, result has 10.2 percent of original size [2021-11-23 02:14:11,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 119 treesize of output 83 [2021-11-23 02:14:11,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:11,034 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-11-23 02:14:11,034 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 84 [2021-11-23 02:14:11,052 INFO L354 Elim1Store]: treesize reduction 32, result has 43.9 percent of original size [2021-11-23 02:14:11,053 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 89 treesize of output 91 [2021-11-23 02:14:11,273 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-23 02:14:11,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 74 [2021-11-23 02:14:11,419 INFO L354 Elim1Store]: treesize reduction 64, result has 12.3 percent of original size [2021-11-23 02:14:11,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 86 treesize of output 45 [2021-11-23 02:14:11,463 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:14:11,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:14:11,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136310514] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:14:11,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1136524306] [2021-11-23 02:14:11,732 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2021-11-23 02:14:11,732 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:14:11,733 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:14:11,733 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:14:11,733 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:14:11,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:11,769 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-23 02:14:11,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-23 02:14:11,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:11,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 17 treesize of output 22 [2021-11-23 02:14:11,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 12 treesize of output 9 [2021-11-23 02:14:11,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 6 treesize of output 5 [2021-11-23 02:14:11,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:11,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2021-11-23 02:14:11,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:11,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2021-11-23 02:14:11,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:11,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2021-11-23 02:14:11,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:11,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-11-23 02:14:11,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:11,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-11-23 02:14:11,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:11,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-11-23 02:14:11,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:11,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-11-23 02:14:11,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2021-11-23 02:14:12,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2021-11-23 02:14:12,013 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2021-11-23 02:14:12,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2021-11-23 02:14:12,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2021-11-23 02:14:12,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2021-11-23 02:14:12,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2021-11-23 02:14:12,107 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2021-11-23 02:14:12,118 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2021-11-23 02:14:12,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2021-11-23 02:14:12,194 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:14:12,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:12,196 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 249 treesize of output 233 [2021-11-23 02:14:12,208 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:14:12,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 236 treesize of output 224 [2021-11-23 02:14:12,231 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:14:12,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 241 treesize of output 120 [2021-11-23 02:14:12,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2021-11-23 02:14:12,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2021-11-23 02:14:12,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2021-11-23 02:14:12,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2021-11-23 02:14:12,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2021-11-23 02:14:12,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2021-11-23 02:14:12,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2021-11-23 02:14:12,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2021-11-23 02:14:12,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2021-11-23 02:14:12,449 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2021-11-23 02:14:12,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2021-11-23 02:14:12,493 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2021-11-23 02:14:12,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:12,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-23 02:14:12,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2021-11-23 02:14:12,613 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2021-11-23 02:14:12,623 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2021-11-23 02:14:12,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2021-11-23 02:14:12,644 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2021-11-23 02:14:12,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2021-11-23 02:14:12,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2021-11-23 02:14:12,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2021-11-23 02:14:12,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2021-11-23 02:14:12,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2021-11-23 02:14:12,791 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:14:12,803 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-23 02:14:12,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2021-11-23 02:14:12,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:12,818 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-23 02:14:12,853 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-23 02:14:12,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 25 [2021-11-23 02:14:12,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2021-11-23 02:14:12,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:12,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:12,953 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 02:14:12,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2021-11-23 02:14:12,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2021-11-23 02:14:12,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 9 treesize of output 3 [2021-11-23 02:14:13,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:13,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:13,010 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 02:14:13,011 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2021-11-23 02:14:13,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2021-11-23 02:14:13,097 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2021-11-23 02:14:13,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:13,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:13,117 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 02:14:13,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2021-11-23 02:14:13,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 9 treesize of output 3 [2021-11-23 02:14:13,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:13,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:13,155 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 02:14:13,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2021-11-23 02:14:13,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:13,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:13,456 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:14:13,466 INFO L354 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2021-11-23 02:14:13,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 522 treesize of output 513 [2021-11-23 02:14:13,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:13,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:13,500 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:14:13,508 INFO L354 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2021-11-23 02:14:13,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 507 treesize of output 498 [2021-11-23 02:14:13,534 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:14:13,613 INFO L354 Elim1Store]: treesize reduction 63, result has 23.2 percent of original size [2021-11-23 02:14:13,613 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 492 treesize of output 485 [2021-11-23 02:14:13,633 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:14:13,639 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:14:13,733 INFO L354 Elim1Store]: treesize reduction 166, result has 14.0 percent of original size [2021-11-23 02:14:13,733 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 11 case distinctions, treesize of input 482 treesize of output 416 [2021-11-23 02:14:13,752 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:14:13,753 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:14:13,800 INFO L354 Elim1Store]: treesize reduction 175, result has 9.3 percent of original size [2021-11-23 02:14:13,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 11 case distinctions, treesize of input 411 treesize of output 336 [2021-11-23 02:14:13,980 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 8 for LOIs [2021-11-23 02:14:13,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 6 treesize of output 5 [2021-11-23 02:14:13,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 12 treesize of output 9 [2021-11-23 02:14:14,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:14,004 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2021-11-23 02:14:14,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:14,010 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2021-11-23 02:14:14,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:14,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2021-11-23 02:14:14,022 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:14:21,904 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '710#(and (< |#StackHeapBarrier| |ULTIMATE.start_main_~#s~0#1.base|) (< |ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base| |#StackHeapBarrier|) (= |ULTIMATE.start_sll_circular_prepend_~last~1#1.offset| 4) (< |ULTIMATE.start_sll_circular_create_~new_head~0#1.base| |#StackHeapBarrier|) (= |ULTIMATE.start_sll_circular_prepend_#in~data#1| |ULTIMATE.start_sll_circular_prepend_~data#1|) (= |ULTIMATE.start_sll_circular_prepend_#in~head#1.base| |ULTIMATE.start_main_~#s~0#1.base|) (= |ULTIMATE.start_sll_circular_prepend_~last~1#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base|) 0)) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~ptr~0#1.base|) (+ |ULTIMATE.start_main_~ptr~0#1.offset| 4)) |ULTIMATE.start_main_~data~0#1|)) (= |ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_sll_circular_prepend_~last~1#1.base|) |ULTIMATE.start_sll_circular_prepend_~last~1#1.offset|)) (= |ULTIMATE.start_main_~ptr~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|)) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|) |ULTIMATE.start_main_~ptr~0#1.offset|) (= |ULTIMATE.start_sll_circular_prepend_#in~head#1.base| |ULTIMATE.start_sll_circular_prepend_~head#1.base|) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_sll_circular_prepend_~head#1.base|) |ULTIMATE.start_sll_circular_prepend_~head#1.offset|) |ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base|) (= |ULTIMATE.start_sll_circular_create_~last~0#1.offset| 0) (<= |ULTIMATE.start_sll_circular_create_#res#1.offset| 0) (= 8 (select |#length| |ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base|)) (= |ULTIMATE.start_sll_circular_create_~head~0#1.base| |ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) (< |ULTIMATE.start_sll_circular_create_~last~0#1.base| |#StackHeapBarrier|) (not (= |ULTIMATE.start_sll_circular_create_~last~0#1.base| 0)) (= (+ |ULTIMATE.start_sll_circular_create_~len#1| 1) |ULTIMATE.start_sll_circular_create_#in~len#1|) (= |ULTIMATE.start_main_~count~0#1| 0) (<= 1 |ULTIMATE.start_sll_circular_create_#in~data#1|) (= |ULTIMATE.start_sll_circular_create_#in~data#1| |ULTIMATE.start_sll_circular_create_~data#1|) (not (= 2 |ULTIMATE.start_main_~#s~0#1.base|)) (= |ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base| |ULTIMATE.start_sll_circular_prepend_~last~1#1.base|) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base|) |ULTIMATE.start_sll_circular_prepend_~new_head~1#1.offset|) |ULTIMATE.start_sll_circular_prepend_~last~1#1.base|) (= |ULTIMATE.start_main_~len~0#1| |ULTIMATE.start_sll_circular_create_#in~len#1|) (= |ULTIMATE.start_main_~data~0#1| 1) (= |ULTIMATE.start_sll_circular_create_~head~0#1.base| |ULTIMATE.start_sll_circular_create_#res#1.base|) (<= |ULTIMATE.start_sll_circular_create_~data#1| 1) (= 0 |ULTIMATE.start_sll_circular_prepend_~new_head~1#1.offset|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_sll_circular_prepend_~last~1#1.base|) |ULTIMATE.start_sll_circular_prepend_~last~1#1.offset|) |ULTIMATE.start_sll_circular_prepend_~new_head~1#1.offset|) (<= 0 |ULTIMATE.start_sll_circular_prepend_#in~head#1.offset|) (= |ULTIMATE.start_sll_circular_create_~head~0#1.offset| |ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|) (= |ULTIMATE.start_main_~#s~0#1.offset| 0) (= |ULTIMATE.start_main_~len~0#1| 2) (not (= |ULTIMATE.start_sll_circular_create_~new_head~0#1.base| 0)) (= |#NULL.offset| 0) (<= |ULTIMATE.start_sll_circular_prepend_~head#1.offset| 0) (= |ULTIMATE.start_sll_circular_prepend_~head#1.offset| |ULTIMATE.start_sll_circular_prepend_#in~head#1.offset|) (not (= |ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base| 0)) (= 1 (select |#valid| |ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base|)) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_sll_circular_prepend_~head#1.base|) |ULTIMATE.start_sll_circular_prepend_~head#1.offset|) |ULTIMATE.start_sll_circular_prepend_~new_head~1#1.offset|) (<= 0 |ULTIMATE.start_sll_circular_create_#res#1.offset|) (= |ULTIMATE.start_sll_circular_create_~new_head~0#1.offset| 0) (= |ULTIMATE.start_sll_circular_prepend_#in~data#1| |ULTIMATE.start_main_~data~0#1|) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-23 02:14:21,904 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:14:21,905 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 02:14:21,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 33 [2021-11-23 02:14:21,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032254545] [2021-11-23 02:14:21,905 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 02:14:21,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-11-23 02:14:21,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:14:21,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-11-23 02:14:21,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=2654, Unknown=0, NotChecked=0, Total=2862 [2021-11-23 02:14:21,907 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand has 33 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-23 02:14:26,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:14:26,582 INFO L93 Difference]: Finished difference Result 43 states and 53 transitions. [2021-11-23 02:14:26,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-23 02:14:26,583 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 26 [2021-11-23 02:14:26,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:14:26,584 INFO L225 Difference]: With dead ends: 43 [2021-11-23 02:14:26,584 INFO L226 Difference]: Without dead ends: 35 [2021-11-23 02:14:26,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 996 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=273, Invalid=3633, Unknown=0, NotChecked=0, Total=3906 [2021-11-23 02:14:26,587 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 5 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 81 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:14:26,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 225 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 173 Invalid, 0 Unknown, 81 Unchecked, 0.2s Time] [2021-11-23 02:14:26,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-11-23 02:14:26,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2021-11-23 02:14:26,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-23 02:14:26,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2021-11-23 02:14:26,598 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 26 [2021-11-23 02:14:26,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:14:26,599 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2021-11-23 02:14:26,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-23 02:14:26,599 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2021-11-23 02:14:26,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-23 02:14:26,601 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:14:26,601 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:14:26,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6c8c7d-8088-45f7-b4fe-cf5f68f16d57/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 02:14:26,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6c8c7d-8088-45f7-b4fe-cf5f68f16d57/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:14:26,823 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:14:26,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:14:26,824 INFO L85 PathProgramCache]: Analyzing trace with hash -2081892583, now seen corresponding path program 1 times [2021-11-23 02:14:26,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:14:26,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229826959] [2021-11-23 02:14:26,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:14:26,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:14:26,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:14:27,798 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 02:14:27,799 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:14:27,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229826959] [2021-11-23 02:14:27,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229826959] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:14:27,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115277454] [2021-11-23 02:14:27,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:14:27,799 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:14:27,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6c8c7d-8088-45f7-b4fe-cf5f68f16d57/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:14:27,800 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6c8c7d-8088-45f7-b4fe-cf5f68f16d57/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:14:27,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6c8c7d-8088-45f7-b4fe-cf5f68f16d57/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 02:14:27,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:14:27,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 106 conjunts are in the unsatisfiable core [2021-11-23 02:14:27,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:14:27,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 02:14:27,981 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 9 treesize of output 7 [2021-11-23 02:14:28,090 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-23 02:14:28,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-23 02:14:28,226 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 02:14:28,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 14 [2021-11-23 02:14:28,304 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-23 02:14:28,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2021-11-23 02:14:28,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 02:14:28,503 INFO L354 Elim1Store]: treesize reduction 53, result has 22.1 percent of original size [2021-11-23 02:14:28,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 93 treesize of output 47 [2021-11-23 02:14:28,651 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-11-23 02:14:28,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 102 treesize of output 40 [2021-11-23 02:14:28,658 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-23 02:14:28,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 25 [2021-11-23 02:14:28,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 02:14:28,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:28,901 INFO L354 Elim1Store]: treesize reduction 188, result has 9.2 percent of original size [2021-11-23 02:14:28,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 140 treesize of output 92 [2021-11-23 02:14:28,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:28,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 109 [2021-11-23 02:14:28,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:14:28,932 INFO L354 Elim1Store]: treesize reduction 64, result has 28.1 percent of original size [2021-11-23 02:14:28,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 118 treesize of output 118 [2021-11-23 02:14:29,834 INFO L354 Elim1Store]: treesize reduction 78, result has 16.1 percent of original size [2021-11-23 02:14:29,834 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 397 treesize of output 290 [2021-11-23 02:14:29,950 INFO L354 Elim1Store]: treesize reduction 360, result has 9.3 percent of original size [2021-11-23 02:14:29,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 317 treesize of output 147 [2021-11-23 02:14:29,994 INFO L354 Elim1Store]: treesize reduction 346, result has 8.0 percent of original size [2021-11-23 02:14:29,994 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 392 treesize of output 258 [2021-11-23 02:14:30,150 INFO L354 Elim1Store]: treesize reduction 68, result has 1.4 percent of original size [2021-11-23 02:14:30,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 8 new quantified variables, introduced 6 case distinctions, treesize of input 212 treesize of output 76 [2021-11-23 02:14:30,158 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-23 02:14:30,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 30 [2021-11-23 02:14:30,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 7 [2021-11-23 02:14:30,266 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 02:14:30,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:14:32,398 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_13 Int) (v_DerPreprocessor_14 Int) (v_DerPreprocessor_15 Int) (|ULTIMATE.start_sll_circular_prepend_~last~1#1.offset| Int)) (= (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.offset| v_DerPreprocessor_15)))) (store .cse1 |c_ULTIMATE.start_sll_circular_prepend_~head#1.base| (store (select .cse1 |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset| v_DerPreprocessor_14))))) (store .cse0 |c_ULTIMATE.start_sll_circular_prepend_~last~1#1.base| (store (select .cse0 |c_ULTIMATE.start_sll_circular_prepend_~last~1#1.base|) |ULTIMATE.start_sll_circular_prepend_~last~1#1.offset| v_DerPreprocessor_13))) (select (select (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset|))))) (store .cse3 |c_ULTIMATE.start_sll_circular_prepend_~head#1.base| (store (select .cse3 |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base|))))) (store .cse2 |c_ULTIMATE.start_sll_circular_prepend_~last~1#1.base| (store (select .cse2 |c_ULTIMATE.start_sll_circular_prepend_~last~1#1.base|) |ULTIMATE.start_sll_circular_prepend_~last~1#1.offset| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (+ (select (select (let ((.cse4 (let ((.cse5 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.offset| (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset|))))) (store .cse5 |c_ULTIMATE.start_sll_circular_prepend_~head#1.base| (store (select .cse5 |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.offset|))))) (store .cse4 |c_ULTIMATE.start_sll_circular_prepend_~last~1#1.base| (store (select .cse4 |c_ULTIMATE.start_sll_circular_prepend_~last~1#1.base|) |ULTIMATE.start_sll_circular_prepend_~last~1#1.offset| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.offset|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4)) |c_ULTIMATE.start_main_~data~0#1|)) is different from false [2021-11-23 02:14:34,429 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_13 Int) (v_DerPreprocessor_14 Int) (|v_ULTIMATE.start_sll_circular_prepend_~last~1#1.offset_14| Int) (v_DerPreprocessor_15 Int)) (= |c_ULTIMATE.start_main_~data~0#1| (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_prepend_~last~1#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~last~1#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.offset| v_DerPreprocessor_15)))) (store .cse2 |c_ULTIMATE.start_sll_circular_prepend_~head#1.base| (store (select .cse2 |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset| v_DerPreprocessor_14))))) (store .cse0 .cse1 (store (select .cse0 .cse1) |v_ULTIMATE.start_sll_circular_prepend_~last~1#1.offset_14| v_DerPreprocessor_13))) (select (select (let ((.cse3 (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset|))))) (store .cse4 |c_ULTIMATE.start_sll_circular_prepend_~head#1.base| (store (select .cse4 |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base|))))) (store .cse3 .cse1 (store (select .cse3 .cse1) |v_ULTIMATE.start_sll_circular_prepend_~last~1#1.offset_14| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (+ (select (select (let ((.cse5 (let ((.cse6 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.offset| (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset|))))) (store .cse6 |c_ULTIMATE.start_sll_circular_prepend_~head#1.base| (store (select .cse6 |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.offset|))))) (store .cse5 .cse1 (store (select .cse5 .cse1) |v_ULTIMATE.start_sll_circular_prepend_~last~1#1.offset_14| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.offset|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))))) is different from false [2021-11-23 02:15:00,831 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_13 Int) (v_DerPreprocessor_14 Int) (|v_ULTIMATE.start_sll_circular_prepend_~last~1#1.offset_14| Int) (v_DerPreprocessor_15 Int)) (= (let ((.cse5 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset|)) (.cse8 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| .cse5) .cse8))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base|) |c_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.offset| v_DerPreprocessor_15)))) (store .cse2 |c_ULTIMATE.start_sll_circular_prepend_~head#1.base| (store (select .cse2 |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset| v_DerPreprocessor_14))))) (store .cse0 .cse1 (store (select .cse0 .cse1) |v_ULTIMATE.start_sll_circular_prepend_~last~1#1.offset_14| v_DerPreprocessor_13))) (select (select (let ((.cse3 (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base|) |c_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.offset| .cse5)))) (store .cse4 |c_ULTIMATE.start_sll_circular_prepend_~head#1.base| (store (select .cse4 |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset| |c_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base|))))) (store .cse3 .cse1 (store (select .cse3 .cse1) |v_ULTIMATE.start_sll_circular_prepend_~last~1#1.offset_14| |c_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (+ (select (select (let ((.cse6 (let ((.cse7 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base|) |c_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.offset| .cse8)))) (store .cse7 |c_ULTIMATE.start_sll_circular_prepend_~head#1.base| (store (select .cse7 |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset| |c_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.offset|))))) (store .cse6 .cse1 (store (select .cse6 .cse1) |v_ULTIMATE.start_sll_circular_prepend_~last~1#1.offset_14| |c_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.offset|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4)))) |c_ULTIMATE.start_main_~data~0#1|)) is different from false [2021-11-23 02:15:00,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 28129 treesize of output 27305 [2021-11-23 02:15:25,221 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base_28| Int)) (or (not (= (select |c_#valid| |v_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base_28|) 0)) (and (forall ((|v_ULTIMATE.start_sll_circular_prepend_~last~1#1.offset_14| Int) (v_DerPreprocessor_17 Int) (v_DerPreprocessor_16 Int)) (let ((.cse5 (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base_28|) 0 0) 4 v_DerPreprocessor_16))) (let ((.cse9 (store (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base_28|) 0 0) 4 v_DerPreprocessor_17)) (.cse11 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base_28| .cse5))) (let ((.cse6 (select (select .cse11 |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset|)) (.cse10 (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base_28| .cse9) |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset|))) (let ((.cse1 (select (select .cse11 .cse6) .cse10))) (let ((.cse0 (+ 4 (select (select (let ((.cse7 (let ((.cse8 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base_28| (store .cse9 0 .cse10)))) (store .cse8 |c_ULTIMATE.start_sll_circular_prepend_~head#1.base| (store (select .cse8 |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset| 0))))) (store .cse7 .cse1 (store (select .cse7 .cse1) |v_ULTIMATE.start_sll_circular_prepend_~last~1#1.offset_14| 0))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (.cse2 (select (select (let ((.cse3 (let ((.cse4 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base_28| (store .cse5 0 .cse6)))) (store .cse4 |c_ULTIMATE.start_sll_circular_prepend_~head#1.base| (store (select .cse4 |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset| |v_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base_28|))))) (store .cse3 .cse1 (store (select .cse3 .cse1) |v_ULTIMATE.start_sll_circular_prepend_~last~1#1.offset_14| |v_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base_28|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (or (not (= .cse0 |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset|)) (and (= .cse0 |v_ULTIMATE.start_sll_circular_prepend_~last~1#1.offset_14|) (= .cse1 .cse2)) (not (= .cse2 |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|))))))))) (forall ((|v_ULTIMATE.start_sll_circular_prepend_~last~1#1.offset_14| Int) (v_DerPreprocessor_17 Int) (v_DerPreprocessor_16 Int)) (let ((.cse15 (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base_28|) 0 0) 4 v_DerPreprocessor_16))) (let ((.cse19 (store (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base_28|) 0 0) 4 v_DerPreprocessor_17)) (.cse21 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base_28| .cse15))) (let ((.cse16 (select (select .cse21 |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset|)) (.cse20 (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base_28| .cse19) |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset|))) (let ((.cse12 (select (select .cse21 .cse16) .cse20))) (or (not (= .cse12 (select (select (let ((.cse13 (let ((.cse14 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base_28| (store .cse15 0 .cse16)))) (store .cse14 |c_ULTIMATE.start_sll_circular_prepend_~head#1.base| (store (select .cse14 |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset| |v_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base_28|))))) (store .cse13 .cse12 (store (select .cse13 .cse12) |v_ULTIMATE.start_sll_circular_prepend_~last~1#1.offset_14| |v_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base_28|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (not (= (+ 4 (select (select (let ((.cse17 (let ((.cse18 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base_28| (store .cse19 0 .cse20)))) (store .cse18 |c_ULTIMATE.start_sll_circular_prepend_~head#1.base| (store (select .cse18 |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset| 0))))) (store .cse17 .cse12 (store (select .cse17 .cse12) |v_ULTIMATE.start_sll_circular_prepend_~last~1#1.offset_14| 0))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) |v_ULTIMATE.start_sll_circular_prepend_~last~1#1.offset_14|)))))))) (forall ((|v_ULTIMATE.start_sll_circular_prepend_~last~1#1.offset_14| Int) (v_DerPreprocessor_17 Int) (v_DerPreprocessor_16 Int)) (let ((.cse27 (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base_28|) 0 0) 4 v_DerPreprocessor_16))) (let ((.cse31 (store (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base_28|) 0 0) 4 v_DerPreprocessor_17)) (.cse33 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base_28| .cse27))) (let ((.cse28 (select (select .cse33 |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset|)) (.cse32 (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base_28| .cse31) |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset|))) (let ((.cse24 (select (select .cse33 .cse28) .cse32))) (let ((.cse22 (select (select (let ((.cse29 (let ((.cse30 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base_28| (store .cse31 0 .cse32)))) (store .cse30 |c_ULTIMATE.start_sll_circular_prepend_~head#1.base| (store (select .cse30 |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset| 0))))) (store .cse29 .cse24 (store (select .cse29 .cse24) |v_ULTIMATE.start_sll_circular_prepend_~last~1#1.offset_14| 0))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse23 (select (select (let ((.cse25 (let ((.cse26 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base_28| (store .cse27 0 .cse28)))) (store .cse26 |c_ULTIMATE.start_sll_circular_prepend_~head#1.base| (store (select .cse26 |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset| |v_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base_28|))))) (store .cse25 .cse24 (store (select .cse25 .cse24) |v_ULTIMATE.start_sll_circular_prepend_~last~1#1.offset_14| |v_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base_28|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (or (and (= 0 .cse22) (= |v_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base_28| .cse23) (= |c_ULTIMATE.start_sll_circular_prepend_~data#1| |c_ULTIMATE.start_main_~data~0#1|)) (and (= (+ 4 .cse22) |v_ULTIMATE.start_sll_circular_prepend_~last~1#1.offset_14|) (= .cse24 .cse23)) (= .cse23 |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|)))))))) (forall ((|v_ULTIMATE.start_sll_circular_prepend_~last~1#1.offset_14| Int) (v_DerPreprocessor_17 Int) (v_DerPreprocessor_16 Int)) (let ((.cse40 (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base_28|) 0 0) 4 v_DerPreprocessor_16))) (let ((.cse44 (store (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base_28|) 0 0) 4 v_DerPreprocessor_17)) (.cse46 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base_28| .cse40))) (let ((.cse41 (select (select .cse46 |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset|)) (.cse45 (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base_28| .cse44) |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset|))) (let ((.cse37 (select (select .cse46 .cse41) .cse45))) (let ((.cse35 (select (select (let ((.cse42 (let ((.cse43 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base_28| (store .cse44 0 .cse45)))) (store .cse43 |c_ULTIMATE.start_sll_circular_prepend_~head#1.base| (store (select .cse43 |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset| 0))))) (store .cse42 .cse37 (store (select .cse42 .cse37) |v_ULTIMATE.start_sll_circular_prepend_~last~1#1.offset_14| 0))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (let ((.cse34 (+ 4 .cse35)) (.cse36 (select (select (let ((.cse38 (let ((.cse39 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base_28| (store .cse40 0 .cse41)))) (store .cse39 |c_ULTIMATE.start_sll_circular_prepend_~head#1.base| (store (select .cse39 |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset| |v_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base_28|))))) (store .cse38 .cse37 (store (select .cse38 .cse37) |v_ULTIMATE.start_sll_circular_prepend_~last~1#1.offset_14| |v_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base_28|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (or (= .cse34 |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset|) (and (= 0 .cse35) (= |v_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base_28| .cse36) (= |c_ULTIMATE.start_sll_circular_prepend_~data#1| |c_ULTIMATE.start_main_~data~0#1|)) (and (= .cse34 |v_ULTIMATE.start_sll_circular_prepend_~last~1#1.offset_14|) (= .cse37 .cse36)))))))))) (forall ((|v_ULTIMATE.start_sll_circular_prepend_~last~1#1.offset_14| Int) (v_DerPreprocessor_17 Int) (v_DerPreprocessor_16 Int)) (let ((.cse54 (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base_28|) 0 0) 4 v_DerPreprocessor_16))) (let ((.cse58 (store (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base_28|) 0 0) 4 v_DerPreprocessor_17)) (.cse60 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base_28| .cse54))) (let ((.cse55 (select (select .cse60 |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset|)) (.cse59 (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base_28| .cse58) |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset|))) (let ((.cse51 (select (select .cse60 .cse55) .cse59))) (let ((.cse49 (select (select (let ((.cse56 (let ((.cse57 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base_28| (store .cse58 0 .cse59)))) (store .cse57 |c_ULTIMATE.start_sll_circular_prepend_~head#1.base| (store (select .cse57 |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset| 0))))) (store .cse56 .cse51 (store (select .cse56 .cse51) |v_ULTIMATE.start_sll_circular_prepend_~last~1#1.offset_14| 0))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse50 (select (select (let ((.cse52 (let ((.cse53 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base_28| (store .cse54 0 .cse55)))) (store .cse53 |c_ULTIMATE.start_sll_circular_prepend_~head#1.base| (store (select .cse53 |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset| |v_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base_28|))))) (store .cse52 .cse51 (store (select .cse52 .cse51) |v_ULTIMATE.start_sll_circular_prepend_~last~1#1.offset_14| |v_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base_28|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (let ((.cse47 (= |v_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base_28| .cse50)) (.cse48 (+ 4 .cse49))) (or (and .cse47 (= .cse48 0)) (and (= 0 .cse49) .cse47 (= |c_ULTIMATE.start_sll_circular_prepend_~data#1| |c_ULTIMATE.start_main_~data~0#1|)) (and (= .cse48 |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset|) (= .cse50 |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|)) (and (= .cse48 |v_ULTIMATE.start_sll_circular_prepend_~last~1#1.offset_14|) (= .cse51 .cse50))))))))))) (<= |c_#StackHeapBarrier| |v_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base_28|))) is different from true [2021-11-23 02:15:25,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115277454] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:15:25,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [387292407] [2021-11-23 02:15:25,226 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2021-11-23 02:15:25,226 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:15:25,226 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:15:25,226 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:15:25,226 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:15:25,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:15:25,278 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-23 02:15:25,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-23 02:15:25,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:15:25,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 17 treesize of output 22 [2021-11-23 02:15:25,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 12 treesize of output 9 [2021-11-23 02:15:25,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 6 treesize of output 5 [2021-11-23 02:15:25,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:15:25,324 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2021-11-23 02:15:25,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:15:25,329 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2021-11-23 02:15:25,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:15:25,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2021-11-23 02:15:25,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:15:25,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-11-23 02:15:25,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:15:25,368 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-11-23 02:15:25,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:15:25,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-11-23 02:15:25,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:15:25,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-11-23 02:15:25,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2021-11-23 02:15:25,483 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2021-11-23 02:15:25,490 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2021-11-23 02:15:25,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2021-11-23 02:15:25,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2021-11-23 02:15:25,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2021-11-23 02:15:25,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2021-11-23 02:15:25,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2021-11-23 02:15:25,563 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2021-11-23 02:15:25,571 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2021-11-23 02:15:25,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2021-11-23 02:15:25,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:15:25,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-23 02:15:25,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2021-11-23 02:15:25,845 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:15:25,847 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:15:25,849 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:15:25,851 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:15:25,854 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:15:25,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2021-11-23 02:15:25,868 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2021-11-23 02:15:25,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2021-11-23 02:15:25,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2021-11-23 02:15:25,891 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2021-11-23 02:15:26,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2021-11-23 02:15:26,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2021-11-23 02:15:26,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2021-11-23 02:15:26,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2021-11-23 02:15:26,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2021-11-23 02:15:26,156 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:15:26,158 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:15:26,162 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:15:26,165 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:15:26,167 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:15:26,210 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2021-11-23 02:15:26,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:15:26,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-23 02:15:26,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2021-11-23 02:15:26,576 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:15:26,579 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:15:26,581 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:15:26,583 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:15:26,586 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:15:26,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2021-11-23 02:15:26,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2021-11-23 02:15:26,606 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2021-11-23 02:15:26,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2021-11-23 02:15:26,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2021-11-23 02:15:26,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2021-11-23 02:15:26,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2021-11-23 02:15:26,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2021-11-23 02:15:26,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2021-11-23 02:15:26,818 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2021-11-23 02:15:26,829 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:15:26,831 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:15:26,833 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:15:26,842 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:15:26,844 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:15:26,906 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-23 02:15:26,907 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2021-11-23 02:15:26,930 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-23 02:15:26,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2021-11-23 02:15:26,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-23 02:15:26,991 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2021-11-23 02:15:27,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:15:27,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:15:27,010 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 02:15:27,010 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2021-11-23 02:15:27,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2021-11-23 02:15:27,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:15:27,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:15:27,044 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 02:15:27,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2021-11-23 02:15:27,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2021-11-23 02:15:27,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2021-11-23 02:15:27,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:15:27,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:15:27,131 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 02:15:27,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2021-11-23 02:15:27,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2021-11-23 02:15:27,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:15:27,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:15:27,157 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 02:15:27,157 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2021-11-23 02:15:27,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2021-11-23 02:15:27,336 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:15:27,367 INFO L354 Elim1Store]: treesize reduction 59, result has 36.6 percent of original size [2021-11-23 02:15:27,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 63 treesize of output 34 [2021-11-23 02:15:27,377 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:15:27,406 INFO L354 Elim1Store]: treesize reduction 71, result has 26.8 percent of original size [2021-11-23 02:15:27,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 87 treesize of output 36 [2021-11-23 02:15:27,422 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:15:27,456 INFO L354 Elim1Store]: treesize reduction 71, result has 26.8 percent of original size [2021-11-23 02:15:27,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 87 treesize of output 36 [2021-11-23 02:15:27,538 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 11 for LOIs [2021-11-23 02:15:27,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 6 treesize of output 5 [2021-11-23 02:15:27,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 12 treesize of output 9 [2021-11-23 02:15:27,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:15:27,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2021-11-23 02:15:27,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:15:27,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2021-11-23 02:15:27,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:15:27,579 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2021-11-23 02:15:27,580 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:15:31,879 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1017#(and (<= 1 |ULTIMATE.start_sll_circular_prepend_~data#1|) (<= 2 |ULTIMATE.start_sll_circular_create_#in~len#1|) (<= |ULTIMATE.start_sll_circular_prepend_#in~data#1| 1) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~ptr~0#1.base|) (+ |ULTIMATE.start_main_~ptr~0#1.offset| 4)) |ULTIMATE.start_main_~data~0#1|)) (= |ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_sll_circular_prepend_~last~1#1.base|) |ULTIMATE.start_sll_circular_prepend_~last~1#1.offset|)) (<= |ULTIMATE.start_sll_circular_create_#in~data#1| 1) (<= |ULTIMATE.start_sll_circular_prepend_#in~head#1.offset| 0) (<= 1 |ULTIMATE.start_sll_circular_create_~len#1|) (= |ULTIMATE.start_main_~ptr~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|)) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|) |ULTIMATE.start_main_~ptr~0#1.offset|) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_sll_circular_prepend_~head#1.base|) |ULTIMATE.start_sll_circular_prepend_~head#1.offset|) |ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base|) (= |ULTIMATE.start_sll_circular_create_~last~0#1.offset| 0) (<= |ULTIMATE.start_sll_circular_prepend_~data#1| 1) (<= |ULTIMATE.start_sll_circular_create_#res#1.offset| 0) (<= 0 |ULTIMATE.start_sll_circular_prepend_~head#1.offset|) (<= |ULTIMATE.start_sll_circular_create_#in~len#1| 2) (<= 1 |ULTIMATE.start_sll_circular_create_~data#1|) (<= 0 |ULTIMATE.start_sll_circular_create_~head~0#1.offset|) (= |ULTIMATE.start_main_~count~0#1| 0) (<= 1 |ULTIMATE.start_sll_circular_create_#in~data#1|) (<= |ULTIMATE.start_sll_circular_create_~len#1| 1) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 1 |ULTIMATE.start_sll_circular_prepend_#in~data#1|) (<= |ULTIMATE.start_sll_circular_create_~data#1| 1) (= 0 |ULTIMATE.start_sll_circular_prepend_~new_head~1#1.offset|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_sll_circular_prepend_~last~1#1.base|) |ULTIMATE.start_sll_circular_prepend_~last~1#1.offset|) |ULTIMATE.start_sll_circular_prepend_~new_head~1#1.offset|) (<= 0 |ULTIMATE.start_sll_circular_prepend_#in~head#1.offset|) (= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= |ULTIMATE.start_sll_circular_create_~head~0#1.offset| 0) (= |ULTIMATE.start_main_~len~0#1| 2) (= |#NULL.offset| 0) (<= |ULTIMATE.start_sll_circular_prepend_~head#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_sll_circular_prepend_~head#1.base|) |ULTIMATE.start_sll_circular_prepend_~head#1.offset|) |ULTIMATE.start_sll_circular_prepend_~new_head~1#1.offset|) (<= 0 |ULTIMATE.start_sll_circular_create_#res#1.offset|) (<= 0 |ULTIMATE.start_sll_circular_prepend_~head#1.base|) (= |ULTIMATE.start_sll_circular_create_~new_head~0#1.offset| 0) (<= 0 |ULTIMATE.start_sll_circular_prepend_#in~head#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-23 02:15:31,879 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:15:31,879 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 02:15:31,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20] total 38 [2021-11-23 02:15:31,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276757185] [2021-11-23 02:15:31,880 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 02:15:31,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-11-23 02:15:31,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:15:31,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-11-23 02:15:31,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=3350, Unknown=11, NotChecked=476, Total=4032 [2021-11-23 02:15:31,883 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand has 39 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 30 states have internal predecessors, (38), 6 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-23 02:15:32,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:15:32,960 INFO L93 Difference]: Finished difference Result 45 states and 54 transitions. [2021-11-23 02:15:32,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-23 02:15:32,960 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 30 states have internal predecessors, (38), 6 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 28 [2021-11-23 02:15:32,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:15:32,961 INFO L225 Difference]: With dead ends: 45 [2021-11-23 02:15:32,961 INFO L226 Difference]: Without dead ends: 43 [2021-11-23 02:15:32,963 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 820 ImplicationChecksByTransitivity, 39.1s TimeCoverageRelationStatistics Valid=253, Invalid=4308, Unknown=11, NotChecked=540, Total=5112 [2021-11-23 02:15:32,964 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 15 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 85 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:15:32,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 297 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 456 Invalid, 0 Unknown, 85 Unchecked, 0.4s Time] [2021-11-23 02:15:32,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-11-23 02:15:32,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2021-11-23 02:15:32,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 32 states have (on average 1.1875) internal successors, (38), 32 states have internal predecessors, (38), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-23 02:15:32,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2021-11-23 02:15:32,975 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 28 [2021-11-23 02:15:32,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:15:32,976 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2021-11-23 02:15:32,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 30 states have internal predecessors, (38), 6 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-23 02:15:32,977 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2021-11-23 02:15:32,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-23 02:15:32,978 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:15:32,978 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:15:33,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6c8c7d-8088-45f7-b4fe-cf5f68f16d57/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 02:15:33,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6c8c7d-8088-45f7-b4fe-cf5f68f16d57/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:15:33,187 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:15:33,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:15:33,187 INFO L85 PathProgramCache]: Analyzing trace with hash 757806099, now seen corresponding path program 1 times [2021-11-23 02:15:33,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:15:33,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506322280] [2021-11-23 02:15:33,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:15:33,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:15:33,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:15:33,949 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 02:15:33,949 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:15:33,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506322280] [2021-11-23 02:15:33,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506322280] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:15:33,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986911825] [2021-11-23 02:15:33,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:15:33,952 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:15:33,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6c8c7d-8088-45f7-b4fe-cf5f68f16d57/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:15:33,953 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6c8c7d-8088-45f7-b4fe-cf5f68f16d57/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:15:33,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6c8c7d-8088-45f7-b4fe-cf5f68f16d57/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 02:15:34,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:15:34,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 67 conjunts are in the unsatisfiable core [2021-11-23 02:15:34,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:15:34,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 6 treesize of output 5 [2021-11-23 02:15:34,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 15 [2021-11-23 02:15:34,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:15:34,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 29 [2021-11-23 02:15:34,406 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-11-23 02:15:34,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 30 [2021-11-23 02:15:34,778 INFO L354 Elim1Store]: treesize reduction 102, result has 12.8 percent of original size [2021-11-23 02:15:34,778 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 190 treesize of output 116 [2021-11-23 02:15:34,801 INFO L354 Elim1Store]: treesize reduction 98, result has 16.2 percent of original size [2021-11-23 02:15:34,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 156 treesize of output 74 [2021-11-23 02:15:34,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 7 [2021-11-23 02:15:34,951 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 02:15:34,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 23 [2021-11-23 02:15:34,995 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 02:15:34,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:15:35,028 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 02:15:35,028 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 8014 treesize of output 7994 [2021-11-23 02:18:06,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986911825] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:18:06,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1723331752] [2021-11-23 02:18:06,662 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2021-11-23 02:18:06,663 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:18:06,663 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:18:06,663 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:18:06,664 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:18:06,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:06,699 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-23 02:18:06,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2021-11-23 02:18:06,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:06,726 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-23 02:18:06,726 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-23 02:18:06,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 6 treesize of output 5 [2021-11-23 02:18:06,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 12 treesize of output 9 [2021-11-23 02:18:06,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:06,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2021-11-23 02:18:06,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:06,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2021-11-23 02:18:06,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:06,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2021-11-23 02:18:06,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:06,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-11-23 02:18:06,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:06,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-11-23 02:18:06,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:06,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-11-23 02:18:06,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:06,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-11-23 02:18:06,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2021-11-23 02:18:06,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2021-11-23 02:18:06,926 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2021-11-23 02:18:06,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2021-11-23 02:18:06,945 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2021-11-23 02:18:06,975 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2021-11-23 02:18:06,984 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2021-11-23 02:18:06,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2021-11-23 02:18:06,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2021-11-23 02:18:07,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2021-11-23 02:18:07,035 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2021-11-23 02:18:07,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:07,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-23 02:18:07,054 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2021-11-23 02:18:07,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2021-11-23 02:18:07,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2021-11-23 02:18:07,271 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2021-11-23 02:18:07,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2021-11-23 02:18:07,288 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2021-11-23 02:18:07,297 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:18:07,299 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:18:07,305 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:18:07,306 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:18:07,309 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:18:07,435 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:18:07,437 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:18:07,438 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:18:07,440 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:18:07,443 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:18:07,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2021-11-23 02:18:07,458 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2021-11-23 02:18:07,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2021-11-23 02:18:07,473 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2021-11-23 02:18:07,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2021-11-23 02:18:07,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:07,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-23 02:18:07,522 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2021-11-23 02:18:07,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2021-11-23 02:18:07,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2021-11-23 02:18:07,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2021-11-23 02:18:07,885 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2021-11-23 02:18:07,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2021-11-23 02:18:07,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2021-11-23 02:18:07,909 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:18:07,912 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:18:07,915 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:18:07,919 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:18:07,922 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:18:08,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2021-11-23 02:18:08,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2021-11-23 02:18:08,118 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2021-11-23 02:18:08,128 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2021-11-23 02:18:08,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2021-11-23 02:18:08,143 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:18:08,146 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:18:08,149 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:18:08,151 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:18:08,153 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:18:08,217 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-23 02:18:08,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2021-11-23 02:18:08,240 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-23 02:18:08,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2021-11-23 02:18:08,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-23 02:18:08,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2021-11-23 02:18:08,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2021-11-23 02:18:08,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:08,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:08,352 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 02:18:08,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2021-11-23 02:18:08,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:08,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:08,370 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 02:18:08,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2021-11-23 02:18:08,378 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2021-11-23 02:18:08,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:08,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:08,436 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 02:18:08,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2021-11-23 02:18:08,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2021-11-23 02:18:08,454 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2021-11-23 02:18:08,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:08,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:08,488 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 02:18:08,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2021-11-23 02:18:08,500 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2021-11-23 02:18:08,792 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:18:08,834 INFO L354 Elim1Store]: treesize reduction 71, result has 26.8 percent of original size [2021-11-23 02:18:08,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 87 treesize of output 36 [2021-11-23 02:18:08,848 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:18:08,877 INFO L354 Elim1Store]: treesize reduction 71, result has 26.8 percent of original size [2021-11-23 02:18:08,877 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 87 treesize of output 36 [2021-11-23 02:18:08,900 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:18:08,946 INFO L354 Elim1Store]: treesize reduction 59, result has 36.6 percent of original size [2021-11-23 02:18:08,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 63 treesize of output 34 [2021-11-23 02:18:09,047 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 18 for LOIs [2021-11-23 02:18:09,054 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 6 treesize of output 5 [2021-11-23 02:18:09,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 12 treesize of output 9 [2021-11-23 02:18:09,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:09,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2021-11-23 02:18:09,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:09,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2021-11-23 02:18:09,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:09,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2021-11-23 02:18:09,090 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:18:14,050 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1340#(and (= (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|)) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|)) |ULTIMATE.start_main_~ptr~0#1.base|) (<= 1 |ULTIMATE.start_sll_circular_prepend_~data#1|) (<= 2 |ULTIMATE.start_sll_circular_create_#in~len#1|) (<= |ULTIMATE.start_sll_circular_prepend_#in~data#1| 1) (= |ULTIMATE.start_main_~count~0#1| 1) (= |ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_sll_circular_prepend_~last~1#1.base|) |ULTIMATE.start_sll_circular_prepend_~last~1#1.offset|)) (<= |ULTIMATE.start_sll_circular_create_#in~data#1| 1) (<= |ULTIMATE.start_sll_circular_prepend_#in~head#1.offset| 0) (<= 1 |ULTIMATE.start_sll_circular_create_~len#1|) (= |ULTIMATE.start_main_~ptr~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|)) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|) |ULTIMATE.start_main_~ptr~0#1.offset|) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_sll_circular_prepend_~head#1.base|) |ULTIMATE.start_sll_circular_prepend_~head#1.offset|) |ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base|) (= |ULTIMATE.start_sll_circular_create_~last~0#1.offset| 0) (<= |ULTIMATE.start_sll_circular_prepend_~data#1| 1) (<= |ULTIMATE.start_sll_circular_create_#res#1.offset| 0) (<= 0 |ULTIMATE.start_sll_circular_prepend_~head#1.offset|) (<= |ULTIMATE.start_sll_circular_create_#in~len#1| 2) (<= 1 |ULTIMATE.start_sll_circular_create_~data#1|) (<= 0 |ULTIMATE.start_sll_circular_create_~head~0#1.offset|) (<= 1 |ULTIMATE.start_sll_circular_create_#in~data#1|) (<= |ULTIMATE.start_sll_circular_create_~len#1| 1) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 1 |ULTIMATE.start_sll_circular_prepend_#in~data#1|) (<= |ULTIMATE.start_sll_circular_create_~data#1| 1) (= 0 |ULTIMATE.start_sll_circular_prepend_~new_head~1#1.offset|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_sll_circular_prepend_~last~1#1.base|) |ULTIMATE.start_sll_circular_prepend_~last~1#1.offset|) |ULTIMATE.start_sll_circular_prepend_~new_head~1#1.offset|) (<= 0 |ULTIMATE.start_sll_circular_prepend_#in~head#1.offset|) (= (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|)) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|)) |ULTIMATE.start_main_~ptr~0#1.offset|) (= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= |ULTIMATE.start_sll_circular_create_~head~0#1.offset| 0) (= |ULTIMATE.start_main_~len~0#1| 2) (= |#NULL.offset| 0) (<= |ULTIMATE.start_sll_circular_prepend_~head#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_sll_circular_prepend_~head#1.base|) |ULTIMATE.start_sll_circular_prepend_~head#1.offset|) |ULTIMATE.start_sll_circular_prepend_~new_head~1#1.offset|) (= (select (select |#memory_int| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|)) (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|) 4)) |ULTIMATE.start_main_~data~0#1|) (<= 0 |ULTIMATE.start_sll_circular_create_#res#1.offset|) (<= 0 |ULTIMATE.start_sll_circular_prepend_~head#1.base|) (= |ULTIMATE.start_sll_circular_create_~new_head~0#1.offset| 0) (<= 0 |ULTIMATE.start_sll_circular_prepend_#in~head#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-23 02:18:14,050 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:18:14,050 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 02:18:14,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18] total 35 [2021-11-23 02:18:14,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312246130] [2021-11-23 02:18:14,051 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 02:18:14,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-11-23 02:18:14,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:18:14,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-11-23 02:18:14,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=3150, Unknown=55, NotChecked=0, Total=3422 [2021-11-23 02:18:14,054 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand has 35 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 29 states have internal predecessors, (41), 3 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-23 02:18:41,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:18:41,418 INFO L93 Difference]: Finished difference Result 50 states and 59 transitions. [2021-11-23 02:18:41,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-23 02:18:41,419 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 29 states have internal predecessors, (41), 3 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 30 [2021-11-23 02:18:41,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:18:41,420 INFO L225 Difference]: With dead ends: 50 [2021-11-23 02:18:41,420 INFO L226 Difference]: Without dead ends: 47 [2021-11-23 02:18:41,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1167 ImplicationChecksByTransitivity, 164.0s TimeCoverageRelationStatistics Valid=350, Invalid=4984, Unknown=68, NotChecked=0, Total=5402 [2021-11-23 02:18:41,423 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 35 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:18:41,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 241 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-23 02:18:41,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-11-23 02:18:41,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 43. [2021-11-23 02:18:41,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 35 states have (on average 1.2) internal successors, (42), 35 states have internal predecessors, (42), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-23 02:18:41,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2021-11-23 02:18:41,435 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 30 [2021-11-23 02:18:41,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:18:41,436 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2021-11-23 02:18:41,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 29 states have internal predecessors, (41), 3 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-23 02:18:41,436 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2021-11-23 02:18:41,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-23 02:18:41,437 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:18:41,437 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:18:41,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6c8c7d-8088-45f7-b4fe-cf5f68f16d57/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-23 02:18:41,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6c8c7d-8088-45f7-b4fe-cf5f68f16d57/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-23 02:18:41,663 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:18:41,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:18:41,664 INFO L85 PathProgramCache]: Analyzing trace with hash 314220948, now seen corresponding path program 2 times [2021-11-23 02:18:41,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:18:41,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820510699] [2021-11-23 02:18:41,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:18:41,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:18:41,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:18:42,134 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:18:42,134 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:18:42,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820510699] [2021-11-23 02:18:42,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820510699] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:18:42,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077839938] [2021-11-23 02:18:42,134 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 02:18:42,134 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:18:42,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6c8c7d-8088-45f7-b4fe-cf5f68f16d57/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:18:42,135 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6c8c7d-8088-45f7-b4fe-cf5f68f16d57/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:18:42,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6c8c7d-8088-45f7-b4fe-cf5f68f16d57/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-23 02:18:42,437 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-23 02:18:42,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 02:18:42,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 124 conjunts are in the unsatisfiable core [2021-11-23 02:18:42,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:18:42,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 02:18:42,722 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-23 02:18:42,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-23 02:18:42,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 02:18:42,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 02:18:42,934 INFO L354 Elim1Store]: treesize reduction 57, result has 16.2 percent of original size [2021-11-23 02:18:42,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 66 [2021-11-23 02:18:42,951 INFO L354 Elim1Store]: treesize reduction 53, result has 17.2 percent of original size [2021-11-23 02:18:42,951 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 92 treesize of output 78 [2021-11-23 02:18:43,053 INFO L354 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2021-11-23 02:18:43,054 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 99 treesize of output 56 [2021-11-23 02:18:43,062 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 02:18:43,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 31 [2021-11-23 02:18:43,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 02:18:43,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:43,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:43,297 INFO L354 Elim1Store]: treesize reduction 114, result has 11.6 percent of original size [2021-11-23 02:18:43,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 145 treesize of output 104 [2021-11-23 02:18:43,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:43,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:43,336 INFO L354 Elim1Store]: treesize reduction 206, result has 11.6 percent of original size [2021-11-23 02:18:43,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 130 treesize of output 119 [2021-11-23 02:18:43,354 INFO L354 Elim1Store]: treesize reduction 28, result has 42.9 percent of original size [2021-11-23 02:18:43,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 115 treesize of output 117 [2021-11-23 02:18:44,929 INFO L354 Elim1Store]: treesize reduction 634, result has 8.5 percent of original size [2021-11-23 02:18:44,929 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 12 new quantified variables, introduced 23 case distinctions, treesize of input 519 treesize of output 275 [2021-11-23 02:18:45,040 INFO L354 Elim1Store]: treesize reduction 719, result has 6.3 percent of original size [2021-11-23 02:18:45,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 17 case distinctions, treesize of input 423 treesize of output 300 [2021-11-23 02:18:45,104 INFO L354 Elim1Store]: treesize reduction 226, result has 11.7 percent of original size [2021-11-23 02:18:45,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 320 treesize of output 222 [2021-11-23 02:18:45,617 INFO L354 Elim1Store]: treesize reduction 76, result has 27.6 percent of original size [2021-11-23 02:18:45,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 310 treesize of output 150 [2021-11-23 02:18:45,644 INFO L354 Elim1Store]: treesize reduction 93, result has 11.4 percent of original size [2021-11-23 02:18:45,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 150 treesize of output 128 [2021-11-23 02:18:45,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 7 [2021-11-23 02:18:45,905 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:18:45,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:19:47,990 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_sll_circular_prepend_~last~1#1.offset_25| Int) (v_DerPreprocessor_29 Int) (v_DerPreprocessor_31 Int) (v_DerPreprocessor_30 Int)) (= (let ((.cse1 (select (select |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_prepend_~last~1#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~last~1#1.offset|)) (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_prepend_~last~1#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~last~1#1.offset|)))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.offset| v_DerPreprocessor_31)))) (store .cse2 |c_ULTIMATE.start_sll_circular_prepend_~head#1.base| (store (select .cse2 |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset| v_DerPreprocessor_30))))) (store .cse0 .cse1 (store (select .cse0 .cse1) |v_ULTIMATE.start_sll_circular_prepend_~last~1#1.offset_25| v_DerPreprocessor_29))) (select (select (let ((.cse3 (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset|))))) (store .cse4 |c_ULTIMATE.start_sll_circular_prepend_~head#1.base| (store (select .cse4 |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base|))))) (store .cse3 .cse1 (store (select .cse3 .cse1) |v_ULTIMATE.start_sll_circular_prepend_~last~1#1.offset_25| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (+ (select (select (let ((.cse5 (let ((.cse6 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.offset| (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset|))))) (store .cse6 |c_ULTIMATE.start_sll_circular_prepend_~head#1.base| (store (select .cse6 |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.offset|))))) (store .cse5 .cse1 (store (select .cse5 .cse1) |v_ULTIMATE.start_sll_circular_prepend_~last~1#1.offset_25| |c_ULTIMATE.start_sll_circular_prepend_~new_head~1#1.offset|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) |c_ULTIMATE.start_main_~data~0#1|)) is different from false [2021-11-23 02:19:52,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 36992 treesize of output 35912