./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-simple/dll2c_insert_unequal.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474913da-5d9c-4774-aa0c-ba7f6efd83d0/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474913da-5d9c-4774-aa0c-ba7f6efd83d0/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474913da-5d9c-4774-aa0c-ba7f6efd83d0/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474913da-5d9c-4774-aa0c-ba7f6efd83d0/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-simple/dll2c_insert_unequal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474913da-5d9c-4774-aa0c-ba7f6efd83d0/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474913da-5d9c-4774-aa0c-ba7f6efd83d0/bin/utaipan-UbGMyvGFUs --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 1b81f923e96224472f8219a473f794261ff02356a47c6b09b527f0fc600725a8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:14:06,219 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:14:06,221 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:14:06,265 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:14:06,266 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:14:06,267 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:14:06,269 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:14:06,272 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:14:06,276 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:14:06,277 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:14:06,279 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:14:06,281 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:14:06,282 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:14:06,283 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:14:06,285 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:14:06,287 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:14:06,288 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:14:06,289 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:14:06,296 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:14:06,304 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:14:06,308 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:14:06,313 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:14:06,317 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:14:06,319 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:14:06,327 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:14:06,328 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:14:06,328 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:14:06,330 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:14:06,331 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:14:06,332 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:14:06,333 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:14:06,335 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:14:06,337 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:14:06,338 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:14:06,340 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:14:06,340 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:14:06,341 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:14:06,341 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:14:06,342 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:14:06,343 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:14:06,344 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:14:06,345 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474913da-5d9c-4774-aa0c-ba7f6efd83d0/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-19 14:14:06,396 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:14:06,396 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:14:06,397 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:14:06,397 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:14:06,398 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:14:06,398 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:14:06,398 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:14:06,398 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:14:06,398 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:14:06,399 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:14:06,399 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:14:06,399 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:14:06,399 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:14:06,399 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:14:06,400 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:14:06,400 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:14:06,401 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:14:06,401 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 14:14:06,401 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:14:06,401 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 14:14:06,401 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:14:06,402 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:14:06,402 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:14:06,402 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:14:06,407 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:14:06,407 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 14:14:06,407 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:14:06,408 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:14:06,408 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:14:06,410 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:14:06,410 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:14:06,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:14:06,411 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:14:06,411 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:14:06,412 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:14:06,412 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:14:06,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:14:06,413 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:14:06,413 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:14:06,414 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:14:06,414 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_474913da-5d9c-4774-aa0c-ba7f6efd83d0/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474913da-5d9c-4774-aa0c-ba7f6efd83d0/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b81f923e96224472f8219a473f794261ff02356a47c6b09b527f0fc600725a8 [2021-11-19 14:14:06,714 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:14:06,737 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:14:06,740 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:14:06,741 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:14:06,742 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:14:06,744 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474913da-5d9c-4774-aa0c-ba7f6efd83d0/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/list-simple/dll2c_insert_unequal.i [2021-11-19 14:14:06,826 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474913da-5d9c-4774-aa0c-ba7f6efd83d0/bin/utaipan-UbGMyvGFUs/data/df08a08bf/a0926940bb9d445f9793c95976ad29a5/FLAG554d966bd [2021-11-19 14:14:07,381 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:14:07,382 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474913da-5d9c-4774-aa0c-ba7f6efd83d0/sv-benchmarks/c/list-simple/dll2c_insert_unequal.i [2021-11-19 14:14:07,396 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474913da-5d9c-4774-aa0c-ba7f6efd83d0/bin/utaipan-UbGMyvGFUs/data/df08a08bf/a0926940bb9d445f9793c95976ad29a5/FLAG554d966bd [2021-11-19 14:14:07,669 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474913da-5d9c-4774-aa0c-ba7f6efd83d0/bin/utaipan-UbGMyvGFUs/data/df08a08bf/a0926940bb9d445f9793c95976ad29a5 [2021-11-19 14:14:07,672 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:14:07,674 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:14:07,675 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:14:07,676 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:14:07,681 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:14:07,682 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:14:07" (1/1) ... [2021-11-19 14:14:07,685 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1502b1cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:07, skipping insertion in model container [2021-11-19 14:14:07,685 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:14:07" (1/1) ... [2021-11-19 14:14:07,692 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:14:07,734 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:14:08,137 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_474913da-5d9c-4774-aa0c-ba7f6efd83d0/sv-benchmarks/c/list-simple/dll2c_insert_unequal.i[25148,25161] [2021-11-19 14:14:08,141 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:14:08,155 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:14:08,233 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_474913da-5d9c-4774-aa0c-ba7f6efd83d0/sv-benchmarks/c/list-simple/dll2c_insert_unequal.i[25148,25161] [2021-11-19 14:14:08,235 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:14:08,268 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:14:08,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:08 WrapperNode [2021-11-19 14:14:08,268 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:14:08,269 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:14:08,270 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:14:08,270 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:14:08,279 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:08" (1/1) ... [2021-11-19 14:14:08,316 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:08" (1/1) ... [2021-11-19 14:14:08,363 INFO L137 Inliner]: procedures = 127, calls = 58, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 185 [2021-11-19 14:14:08,363 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:14:08,364 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:14:08,364 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:14:08,364 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:14:08,371 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:08" (1/1) ... [2021-11-19 14:14:08,372 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:08" (1/1) ... [2021-11-19 14:14:08,376 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:08" (1/1) ... [2021-11-19 14:14:08,377 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:08" (1/1) ... [2021-11-19 14:14:08,388 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:08" (1/1) ... [2021-11-19 14:14:08,393 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:08" (1/1) ... [2021-11-19 14:14:08,395 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:08" (1/1) ... [2021-11-19 14:14:08,400 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:14:08,401 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:14:08,401 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:14:08,401 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:14:08,402 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:08" (1/1) ... [2021-11-19 14:14:08,421 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:14:08,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474913da-5d9c-4774-aa0c-ba7f6efd83d0/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:14:08,453 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474913da-5d9c-4774-aa0c-ba7f6efd83d0/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:14:08,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474913da-5d9c-4774-aa0c-ba7f6efd83d0/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:14:08,495 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-19 14:14:08,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-19 14:14:08,495 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2021-11-19 14:14:08,495 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2021-11-19 14:14:08,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 14:14:08,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:14:08,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 14:14:08,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 14:14:08,496 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 14:14:08,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 14:14:08,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 14:14:08,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 14:14:08,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:14:08,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:14:08,640 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:14:08,642 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:14:09,003 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:14:09,171 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:14:09,171 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-19 14:14:09,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:14:09 BoogieIcfgContainer [2021-11-19 14:14:09,174 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:14:09,177 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:14:09,177 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:14:09,181 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:14:09,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:14:07" (1/3) ... [2021-11-19 14:14:09,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@536626de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:14:09, skipping insertion in model container [2021-11-19 14:14:09,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:08" (2/3) ... [2021-11-19 14:14:09,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@536626de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:14:09, skipping insertion in model container [2021-11-19 14:14:09,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:14:09" (3/3) ... [2021-11-19 14:14:09,185 INFO L111 eAbstractionObserver]: Analyzing ICFG dll2c_insert_unequal.i [2021-11-19 14:14:09,196 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:14:09,197 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 14:14:09,244 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:14:09,251 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 [2021-11-19 14:14:09,252 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 14:14:09,270 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 23 states have (on average 1.608695652173913) internal successors, (37), 24 states have internal predecessors, (37), 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) [2021-11-19 14:14:09,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-19 14:14:09,275 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:14:09,276 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:14:09,277 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:14:09,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:14:09,283 INFO L85 PathProgramCache]: Analyzing trace with hash -170983099, now seen corresponding path program 1 times [2021-11-19 14:14:09,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:14:09,294 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112945908] [2021-11-19 14:14:09,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:14:09,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:14:09,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:14:09,571 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:14:09,572 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:14:09,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112945908] [2021-11-19 14:14:09,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112945908] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:14:09,575 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:14:09,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 14:14:09,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998682592] [2021-11-19 14:14:09,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:14:09,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:14:09,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:14:09,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:14:09,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:14:09,620 INFO L87 Difference]: Start difference. First operand has 29 states, 23 states have (on average 1.608695652173913) internal successors, (37), 24 states have internal predecessors, (37), 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 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2021-11-19 14:14:10,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:14:10,171 INFO L93 Difference]: Finished difference Result 53 states and 79 transitions. [2021-11-19 14:14:10,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:14:10,173 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 16 [2021-11-19 14:14:10,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:14:10,181 INFO L225 Difference]: With dead ends: 53 [2021-11-19 14:14:10,181 INFO L226 Difference]: Without dead ends: 24 [2021-11-19 14:14:10,184 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 [2021-11-19 14:14:10,188 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 1 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:14:10,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 57 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 14:14:10,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-11-19 14:14:10,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-11-19 14:14:10,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 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) [2021-11-19 14:14:10,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 32 transitions. [2021-11-19 14:14:10,224 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 32 transitions. Word has length 16 [2021-11-19 14:14:10,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:14:10,226 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 32 transitions. [2021-11-19 14:14:10,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2021-11-19 14:14:10,226 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 32 transitions. [2021-11-19 14:14:10,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-19 14:14:10,228 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:14:10,228 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:14:10,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 14:14:10,229 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:14:10,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:14:10,230 INFO L85 PathProgramCache]: Analyzing trace with hash 299889229, now seen corresponding path program 1 times [2021-11-19 14:14:10,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:14:10,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147790439] [2021-11-19 14:14:10,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:14:10,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:14:10,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:14:10,365 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-19 14:14:10,366 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:14:10,366 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147790439] [2021-11-19 14:14:10,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147790439] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:14:10,366 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:14:10,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 14:14:10,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897002803] [2021-11-19 14:14:10,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:14:10,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:14:10,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:14:10,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:14:10,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:14:10,370 INFO L87 Difference]: Start difference. First operand 24 states and 32 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-19 14:14:11,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:14:11,044 INFO L93 Difference]: Finished difference Result 36 states and 49 transitions. [2021-11-19 14:14:11,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:14:11,045 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2021-11-19 14:14:11,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:14:11,048 INFO L225 Difference]: With dead ends: 36 [2021-11-19 14:14:11,049 INFO L226 Difference]: Without dead ends: 25 [2021-11-19 14:14:11,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:14:11,054 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 19 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:14:11,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 46 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 14:14:11,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-11-19 14:14:11,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-11-19 14:14:11,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.35) internal successors, (27), 20 states have internal predecessors, (27), 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) [2021-11-19 14:14:11,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2021-11-19 14:14:11,070 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 22 [2021-11-19 14:14:11,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:14:11,076 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2021-11-19 14:14:11,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-19 14:14:11,078 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2021-11-19 14:14:11,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-19 14:14:11,079 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:14:11,079 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:14:11,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 14:14:11,080 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:14:11,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:14:11,082 INFO L85 PathProgramCache]: Analyzing trace with hash 593391176, now seen corresponding path program 1 times [2021-11-19 14:14:11,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:14:11,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105097399] [2021-11-19 14:14:11,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:14:11,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:14:11,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:14:13,167 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 14:14:13,167 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:14:13,168 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105097399] [2021-11-19 14:14:13,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105097399] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 14:14:13,168 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608932504] [2021-11-19 14:14:13,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:14:13,169 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:14:13,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474913da-5d9c-4774-aa0c-ba7f6efd83d0/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:14:13,170 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474913da-5d9c-4774-aa0c-ba7f6efd83d0/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:14:13,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474913da-5d9c-4774-aa0c-ba7f6efd83d0/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-19 14:14:13,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:14:13,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 113 conjunts are in the unsatisfiable core [2021-11-19 14:14:13,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:14:13,716 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 [2021-11-19 14:14:13,823 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 [2021-11-19 14:14:14,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:14:14,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 14 [2021-11-19 14:14:14,294 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-19 14:14:14,295 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 21 treesize of output 17 [2021-11-19 14:14:14,405 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 13 treesize of output 9 [2021-11-19 14:14:14,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:14:14,578 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-19 14:14:14,579 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2021-11-19 14:14:14,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 60 [2021-11-19 14:14:14,786 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:14:14,791 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-11-19 14:14:14,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:14:14,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 36 [2021-11-19 14:14:15,095 INFO L354 Elim1Store]: treesize reduction 166, result has 16.2 percent of original size [2021-11-19 14:14:15,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 234 treesize of output 126 [2021-11-19 14:14:15,107 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:14:15,110 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 198 [2021-11-19 14:14:15,155 INFO L354 Elim1Store]: treesize reduction 116, result has 18.9 percent of original size [2021-11-19 14:14:15,156 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 2 case distinctions, treesize of input 198 treesize of output 141 [2021-11-19 14:14:15,495 INFO L354 Elim1Store]: treesize reduction 47, result has 7.8 percent of original size [2021-11-19 14:14:15,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 136 treesize of output 64 [2021-11-19 14:14:15,510 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-19 14:14:15,511 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 52 treesize of output 46 [2021-11-19 14:14:15,520 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 26 treesize of output 22 [2021-11-19 14:14:15,524 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-11-19 14:14:15,592 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:14:15,593 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-11-19 14:14:15,596 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:14:15,598 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-11-19 14:14:21,903 INFO L354 Elim1Store]: treesize reduction 223, result has 11.2 percent of original size [2021-11-19 14:14:21,904 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 215 treesize of output 222 [2021-11-19 14:14:21,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:14:21,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:14:22,070 INFO L354 Elim1Store]: treesize reduction 489, result has 7.6 percent of original size [2021-11-19 14:14:22,071 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 194 treesize of output 137 [2021-11-19 14:14:22,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:14:22,114 INFO L354 Elim1Store]: treesize reduction 56, result has 27.3 percent of original size [2021-11-19 14:14:22,114 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 183 treesize of output 183 [2021-11-19 14:14:22,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:14:22,149 INFO L354 Elim1Store]: treesize reduction 82, result has 17.2 percent of original size [2021-11-19 14:14:22,149 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 2 case distinctions, treesize of input 171 treesize of output 163 [2021-11-19 14:14:23,396 INFO L354 Elim1Store]: treesize reduction 253, result has 3.1 percent of original size [2021-11-19 14:14:23,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 21 case distinctions, treesize of input 2470 treesize of output 1719 [2021-11-19 14:14:23,459 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-11-19 14:14:23,460 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 2353 treesize of output 2259 [2021-11-19 14:14:23,532 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:14:23,556 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2203 [2021-11-19 14:14:23,617 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:14:23,637 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2194 [2021-11-19 14:14:23,682 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:14:23,701 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2211 [2021-11-19 14:14:23,796 INFO L354 Elim1Store]: treesize reduction 324, result has 8.7 percent of original size [2021-11-19 14:14:23,797 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 4 case distinctions, treesize of input 2211 treesize of output 2160 [2021-11-19 14:14:23,850 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-11-19 14:14:24,544 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 19 treesize of output 11 [2021-11-19 14:14:24,605 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 14:14:24,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:14:24,766 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Some non-self update cases but no top-level DER relation [2021-11-19 14:14:24,766 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1506112334] [2021-11-19 14:14:24,786 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2021-11-19 14:14:24,786 INFO L166 IcfgInterpreter]: Building call graph [2021-11-19 14:14:24,790 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-19 14:14:24,796 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-19 14:14:24,796 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-19 14:14:24,834 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:14:24,836 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 14:14:24,836 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:14:24,837 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-19 14:14:24,837 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 14:14:24,838 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:14:24,838 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-19 14:14:24,840 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 98 [2021-11-19 14:14:24,848 FATAL L? ?]: Ignoring exception! java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@38335293 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker.assertLhs(IncrementalPlicationChecker.java:103) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker.checkPlication(IncrementalPlicationChecker.java:135) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.ArrayIndexEqualityManager.(ArrayIndexEqualityManager.java:92) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.computeCostEstimation(ElimStorePlain.java:571) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.doElimAllRec(ElimStorePlain.java:444) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:242) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:402) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.quantifier(PartialQuantifierElimination.java:228) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:279) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-19 14:14:24,849 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:14:24,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2021-11-19 14:14:24,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903502219] [2021-11-19 14:14:24,850 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-19 14:14:24,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-19 14:14:24,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:14:24,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-19 14:14:24,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=1238, Unknown=2, NotChecked=0, Total=1332 [2021-11-19 14:14:24,853 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand has 21 states, 16 states have (on average 1.0625) internal successors, (17), 15 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 14:14:24,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 14:14:24,854 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=92, Invalid=1238, Unknown=2, NotChecked=0, Total=1332 [2021-11-19 14:14:24,855 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:14:24,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:14:24,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474913da-5d9c-4774-aa0c-ba7f6efd83d0/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-19 14:14:25,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474913da-5d9c-4774-aa0c-ba7f6efd83d0/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:14:25,073 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@38335293 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:359) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:206) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:131) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.checkInternal(ChainingHoareTripleChecker.java:436) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.checkInternal(ChainingHoareTripleChecker.java:98) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:95) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:357) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.chooseFalseSuccessor2(BasicAbstractInterpolantAutomaton.java:107) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:73) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:868) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:784) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-19 14:14:25,075 INFO L158 Benchmark]: Toolchain (without parser) took 17401.36ms. Allocated memory was 96.5MB in the beginning and 148.9MB in the end (delta: 52.4MB). Free memory was 59.6MB in the beginning and 79.9MB in the end (delta: -20.3MB). Peak memory consumption was 32.1MB. Max. memory is 16.1GB. [2021-11-19 14:14:25,076 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 96.5MB. Free memory was 65.6MB in the beginning and 65.6MB in the end (delta: 21.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:14:25,076 INFO L158 Benchmark]: CACSL2BoogieTranslator took 593.23ms. Allocated memory is still 96.5MB. Free memory was 59.4MB in the beginning and 64.2MB in the end (delta: -4.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 14:14:25,077 INFO L158 Benchmark]: Boogie Procedure Inliner took 94.06ms. Allocated memory is still 96.5MB. Free memory was 63.8MB in the beginning and 61.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 14:14:25,077 INFO L158 Benchmark]: Boogie Preprocessor took 35.95ms. Allocated memory is still 96.5MB. Free memory was 61.3MB in the beginning and 59.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 14:14:25,077 INFO L158 Benchmark]: RCFGBuilder took 773.85ms. Allocated memory was 96.5MB in the beginning and 123.7MB in the end (delta: 27.3MB). Free memory was 59.3MB in the beginning and 92.6MB in the end (delta: -33.3MB). Peak memory consumption was 28.9MB. Max. memory is 16.1GB. [2021-11-19 14:14:25,078 INFO L158 Benchmark]: TraceAbstraction took 15897.82ms. Allocated memory was 123.7MB in the beginning and 148.9MB in the end (delta: 25.2MB). Free memory was 92.3MB in the beginning and 79.9MB in the end (delta: 12.5MB). Peak memory consumption was 39.2MB. Max. memory is 16.1GB. [2021-11-19 14:14:25,082 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 96.5MB. Free memory was 65.6MB in the beginning and 65.6MB in the end (delta: 21.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 593.23ms. Allocated memory is still 96.5MB. Free memory was 59.4MB in the beginning and 64.2MB in the end (delta: -4.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 94.06ms. Allocated memory is still 96.5MB. Free memory was 63.8MB in the beginning and 61.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.95ms. Allocated memory is still 96.5MB. Free memory was 61.3MB in the beginning and 59.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 773.85ms. Allocated memory was 96.5MB in the beginning and 123.7MB in the end (delta: 27.3MB). Free memory was 59.3MB in the beginning and 92.6MB in the end (delta: -33.3MB). Peak memory consumption was 28.9MB. Max. memory is 16.1GB. * TraceAbstraction took 15897.82ms. Allocated memory was 123.7MB in the beginning and 148.9MB in the end (delta: 25.2MB). Free memory was 92.3MB in the beginning and 79.9MB in the end (delta: 12.5MB). Peak memory consumption was 39.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@38335293 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@38335293: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-19 14:14:25,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474913da-5d9c-4774-aa0c-ba7f6efd83d0/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474913da-5d9c-4774-aa0c-ba7f6efd83d0/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474913da-5d9c-4774-aa0c-ba7f6efd83d0/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474913da-5d9c-4774-aa0c-ba7f6efd83d0/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474913da-5d9c-4774-aa0c-ba7f6efd83d0/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-simple/dll2c_insert_unequal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474913da-5d9c-4774-aa0c-ba7f6efd83d0/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474913da-5d9c-4774-aa0c-ba7f6efd83d0/bin/utaipan-UbGMyvGFUs --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 1b81f923e96224472f8219a473f794261ff02356a47c6b09b527f0fc600725a8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:14:27,651 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:14:27,655 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:14:27,712 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:14:27,713 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:14:27,717 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:14:27,720 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:14:27,724 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:14:27,728 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:14:27,736 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:14:27,737 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:14:27,739 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:14:27,740 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:14:27,743 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:14:27,745 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:14:27,750 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:14:27,752 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:14:27,753 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:14:27,755 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:14:27,763 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:14:27,765 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:14:27,770 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:14:27,773 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:14:27,774 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:14:27,784 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:14:27,784 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:14:27,784 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:14:27,785 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:14:27,786 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:14:27,786 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:14:27,787 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:14:27,788 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:14:27,789 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:14:27,789 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:14:27,790 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:14:27,791 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:14:27,791 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:14:27,792 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:14:27,792 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:14:27,793 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:14:27,794 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:14:27,795 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474913da-5d9c-4774-aa0c-ba7f6efd83d0/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-19 14:14:27,819 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:14:27,820 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:14:27,821 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:14:27,821 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:14:27,821 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:14:27,821 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:14:27,821 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:14:27,822 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:14:27,822 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:14:27,822 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:14:27,823 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:14:27,823 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 14:14:27,823 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 14:14:27,823 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:14:27,823 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:14:27,824 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:14:27,824 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:14:27,824 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:14:27,824 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 14:14:27,824 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 14:14:27,824 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 14:14:27,825 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:14:27,825 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:14:27,825 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:14:27,825 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:14:27,825 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 14:14:27,826 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:14:27,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:14:27,826 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:14:27,826 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:14:27,826 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:14:27,827 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 14:14:27,827 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 14:14:27,827 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:14:27,827 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:14:27,827 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:14:27,827 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_474913da-5d9c-4774-aa0c-ba7f6efd83d0/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474913da-5d9c-4774-aa0c-ba7f6efd83d0/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b81f923e96224472f8219a473f794261ff02356a47c6b09b527f0fc600725a8 [2021-11-19 14:14:28,243 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:14:28,274 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:14:28,277 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:14:28,278 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:14:28,281 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:14:28,282 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474913da-5d9c-4774-aa0c-ba7f6efd83d0/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/list-simple/dll2c_insert_unequal.i [2021-11-19 14:14:28,356 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474913da-5d9c-4774-aa0c-ba7f6efd83d0/bin/utaipan-UbGMyvGFUs/data/0245edeea/e99baacf928841cebe82c620effd2e7f/FLAG1971acfab [2021-11-19 14:14:28,916 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:14:28,917 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474913da-5d9c-4774-aa0c-ba7f6efd83d0/sv-benchmarks/c/list-simple/dll2c_insert_unequal.i [2021-11-19 14:14:28,944 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474913da-5d9c-4774-aa0c-ba7f6efd83d0/bin/utaipan-UbGMyvGFUs/data/0245edeea/e99baacf928841cebe82c620effd2e7f/FLAG1971acfab [2021-11-19 14:14:29,211 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474913da-5d9c-4774-aa0c-ba7f6efd83d0/bin/utaipan-UbGMyvGFUs/data/0245edeea/e99baacf928841cebe82c620effd2e7f [2021-11-19 14:14:29,213 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:14:29,216 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:14:29,219 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:14:29,219 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:14:29,222 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:14:29,223 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:14:29" (1/1) ... [2021-11-19 14:14:29,224 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24a9d43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:29, skipping insertion in model container [2021-11-19 14:14:29,225 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:14:29" (1/1) ... [2021-11-19 14:14:29,233 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:14:29,291 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:14:29,741 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_474913da-5d9c-4774-aa0c-ba7f6efd83d0/sv-benchmarks/c/list-simple/dll2c_insert_unequal.i[25148,25161] [2021-11-19 14:14:29,747 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:14:29,772 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:14:29,832 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_474913da-5d9c-4774-aa0c-ba7f6efd83d0/sv-benchmarks/c/list-simple/dll2c_insert_unequal.i[25148,25161] [2021-11-19 14:14:29,833 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:14:29,877 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:14:29,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:29 WrapperNode [2021-11-19 14:14:29,878 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:14:29,879 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:14:29,879 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:14:29,879 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:14:29,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:29" (1/1) ... [2021-11-19 14:14:29,916 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:29" (1/1) ... [2021-11-19 14:14:29,951 INFO L137 Inliner]: procedures = 130, calls = 58, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 186 [2021-11-19 14:14:29,954 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:14:29,955 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:14:29,955 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:14:29,955 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:14:29,964 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:29" (1/1) ... [2021-11-19 14:14:29,966 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:29" (1/1) ... [2021-11-19 14:14:29,972 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:29" (1/1) ... [2021-11-19 14:14:29,977 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:29" (1/1) ... [2021-11-19 14:14:30,000 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:29" (1/1) ... [2021-11-19 14:14:30,005 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:29" (1/1) ... [2021-11-19 14:14:30,008 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:29" (1/1) ... [2021-11-19 14:14:30,025 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:14:30,026 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:14:30,027 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:14:30,028 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:14:30,029 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:29" (1/1) ... [2021-11-19 14:14:30,035 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:14:30,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474913da-5d9c-4774-aa0c-ba7f6efd83d0/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:14:30,068 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474913da-5d9c-4774-aa0c-ba7f6efd83d0/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:14:30,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474913da-5d9c-4774-aa0c-ba7f6efd83d0/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:14:30,123 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 14:14:30,123 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2021-11-19 14:14:30,123 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2021-11-19 14:14:30,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 14:14:30,126 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:14:30,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 14:14:30,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 14:14:30,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 14:14:30,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 14:14:30,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 14:14:30,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 14:14:30,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:14:30,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:14:30,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:14:30,318 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:14:30,320 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:14:31,019 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:14:31,026 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:14:31,026 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-19 14:14:31,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:14:31 BoogieIcfgContainer [2021-11-19 14:14:31,029 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:14:31,031 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:14:31,031 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:14:31,034 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:14:31,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:14:29" (1/3) ... [2021-11-19 14:14:31,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@158db02c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:14:31, skipping insertion in model container [2021-11-19 14:14:31,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:29" (2/3) ... [2021-11-19 14:14:31,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@158db02c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:14:31, skipping insertion in model container [2021-11-19 14:14:31,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:14:31" (3/3) ... [2021-11-19 14:14:31,037 INFO L111 eAbstractionObserver]: Analyzing ICFG dll2c_insert_unequal.i [2021-11-19 14:14:31,043 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:14:31,043 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 14:14:31,095 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:14:31,102 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 [2021-11-19 14:14:31,103 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 14:14:31,119 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 38 states have (on average 1.5263157894736843) internal successors, (58), 39 states have internal predecessors, (58), 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) [2021-11-19 14:14:31,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-19 14:14:31,125 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:14:31,126 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:14:31,126 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:14:31,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:14:31,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1243287101, now seen corresponding path program 1 times [2021-11-19 14:14:31,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:14:31,145 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [308203466] [2021-11-19 14:14:31,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:14:31,146 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:14:31,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474913da-5d9c-4774-aa0c-ba7f6efd83d0/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:14:31,156 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474913da-5d9c-4774-aa0c-ba7f6efd83d0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:14:31,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474913da-5d9c-4774-aa0c-ba7f6efd83d0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:14:31,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:14:31,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 14:14:31,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:14:31,468 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:14:31,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:14:31,535 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-19 14:14:31,536 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:14:31,537 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [308203466] [2021-11-19 14:14:31,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [308203466] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:14:31,538 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:14:31,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 14:14:31,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500701746] [2021-11-19 14:14:31,541 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:14:31,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 14:14:31,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:14:31,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 14:14:31,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 14:14:31,574 INFO L87 Difference]: Start difference. First operand has 44 states, 38 states have (on average 1.5263157894736843) internal successors, (58), 39 states have internal predecessors, (58), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-19 14:14:31,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:14:31,593 INFO L93 Difference]: Finished difference Result 79 states and 114 transitions. [2021-11-19 14:14:31,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 14:14:31,595 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2021-11-19 14:14:31,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:14:31,602 INFO L225 Difference]: With dead ends: 79 [2021-11-19 14:14:31,602 INFO L226 Difference]: Without dead ends: 36 [2021-11-19 14:14:31,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 14:14:31,608 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:14:31,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:14:31,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-11-19 14:14:31,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-11-19 14:14:31,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 31 states have (on average 1.3225806451612903) internal successors, (41), 31 states have internal predecessors, (41), 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) [2021-11-19 14:14:31,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 47 transitions. [2021-11-19 14:14:31,649 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 47 transitions. Word has length 25 [2021-11-19 14:14:31,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:14:31,650 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 47 transitions. [2021-11-19 14:14:31,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-19 14:14:31,651 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 47 transitions. [2021-11-19 14:14:31,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-19 14:14:31,653 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:14:31,653 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:14:31,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474913da-5d9c-4774-aa0c-ba7f6efd83d0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 14:14:31,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474913da-5d9c-4774-aa0c-ba7f6efd83d0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:14:31,875 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:14:31,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:14:31,876 INFO L85 PathProgramCache]: Analyzing trace with hash -709703190, now seen corresponding path program 1 times [2021-11-19 14:14:31,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:14:31,877 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1812922439] [2021-11-19 14:14:31,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:14:31,878 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:14:31,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474913da-5d9c-4774-aa0c-ba7f6efd83d0/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:14:31,885 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474913da-5d9c-4774-aa0c-ba7f6efd83d0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:14:31,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474913da-5d9c-4774-aa0c-ba7f6efd83d0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 14:14:32,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:14:32,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:14:32,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:14:32,163 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:14:32,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:14:32,244 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-19 14:14:32,245 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:14:32,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1812922439] [2021-11-19 14:14:32,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1812922439] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:14:32,246 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:14:32,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:14:32,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010222069] [2021-11-19 14:14:32,253 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:14:32,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:14:32,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:14:32,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:14:32,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:14:32,261 INFO L87 Difference]: Start difference. First operand 36 states and 47 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-19 14:14:32,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:14:32,307 INFO L93 Difference]: Finished difference Result 68 states and 89 transitions. [2021-11-19 14:14:32,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:14:32,309 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 25 [2021-11-19 14:14:32,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:14:32,315 INFO L225 Difference]: With dead ends: 68 [2021-11-19 14:14:32,317 INFO L226 Difference]: Without dead ends: 41 [2021-11-19 14:14:32,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:14:32,319 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 7 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:14:32,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 123 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:14:32,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-11-19 14:14:32,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 37. [2021-11-19 14:14:32,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.3125) internal successors, (42), 32 states have internal predecessors, (42), 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) [2021-11-19 14:14:32,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2021-11-19 14:14:32,336 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 48 transitions. Word has length 25 [2021-11-19 14:14:32,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:14:32,336 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 48 transitions. [2021-11-19 14:14:32,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-19 14:14:32,336 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 48 transitions. [2021-11-19 14:14:32,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-19 14:14:32,339 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:14:32,340 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:14:32,357 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474913da-5d9c-4774-aa0c-ba7f6efd83d0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-19 14:14:32,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474913da-5d9c-4774-aa0c-ba7f6efd83d0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:14:32,557 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:14:32,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:14:32,558 INFO L85 PathProgramCache]: Analyzing trace with hash -37646058, now seen corresponding path program 1 times [2021-11-19 14:14:32,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:14:32,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [962117019] [2021-11-19 14:14:32,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:14:32,559 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:14:32,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474913da-5d9c-4774-aa0c-ba7f6efd83d0/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:14:32,561 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474913da-5d9c-4774-aa0c-ba7f6efd83d0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:14:32,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474913da-5d9c-4774-aa0c-ba7f6efd83d0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 14:14:32,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:14:32,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:14:32,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:14:32,926 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-19 14:14:32,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:14:33,470 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-19 14:14:33,471 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:14:33,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [962117019] [2021-11-19 14:14:33,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [962117019] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:14:33,471 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:14:33,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 14:14:33,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929507294] [2021-11-19 14:14:33,472 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:14:33,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:14:33,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:14:33,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:14:33,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:14:33,474 INFO L87 Difference]: Start difference. First operand 37 states and 48 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 4 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-19 14:14:33,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:14:33,532 INFO L93 Difference]: Finished difference Result 55 states and 73 transitions. [2021-11-19 14:14:33,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:14:33,533 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 4 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 35 [2021-11-19 14:14:33,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:14:33,534 INFO L225 Difference]: With dead ends: 55 [2021-11-19 14:14:33,534 INFO L226 Difference]: Without dead ends: 38 [2021-11-19 14:14:33,535 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:14:33,536 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 28 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:14:33,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 101 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:14:33,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-11-19 14:14:33,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-11-19 14:14:33,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 33 states have (on average 1.303030303030303) internal successors, (43), 33 states have internal predecessors, (43), 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) [2021-11-19 14:14:33,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 49 transitions. [2021-11-19 14:14:33,545 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 49 transitions. Word has length 35 [2021-11-19 14:14:33,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:14:33,545 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 49 transitions. [2021-11-19 14:14:33,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 4 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-19 14:14:33,546 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 49 transitions. [2021-11-19 14:14:33,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-19 14:14:33,547 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:14:33,547 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:14:33,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474913da-5d9c-4774-aa0c-ba7f6efd83d0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 14:14:33,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474913da-5d9c-4774-aa0c-ba7f6efd83d0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:14:33,765 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:14:33,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:14:33,765 INFO L85 PathProgramCache]: Analyzing trace with hash 368663721, now seen corresponding path program 1 times [2021-11-19 14:14:33,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:14:33,766 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1604920758] [2021-11-19 14:14:33,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:14:33,767 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:14:33,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474913da-5d9c-4774-aa0c-ba7f6efd83d0/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:14:33,768 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474913da-5d9c-4774-aa0c-ba7f6efd83d0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:14:33,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474913da-5d9c-4774-aa0c-ba7f6efd83d0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 14:14:34,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:14:34,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 79 conjunts are in the unsatisfiable core [2021-11-19 14:14:34,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:14:34,146 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 [2021-11-19 14:14:34,204 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 16 treesize of output 14 [2021-11-19 14:14:34,436 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-19 14:14:34,436 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 26 treesize of output 33 [2021-11-19 14:14:34,827 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-19 14:14:34,827 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 40 treesize of output 36 [2021-11-19 14:14:34,950 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 [2021-11-19 14:14:35,185 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-11-19 14:14:35,185 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 46 treesize of output 63 [2021-11-19 14:14:35,497 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 [2021-11-19 14:14:35,531 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 [2021-11-19 14:14:35,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 46 [2021-11-19 14:14:35,865 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 43 treesize of output 27 [2021-11-19 14:14:36,834 INFO L354 Elim1Store]: treesize reduction 122, result has 16.4 percent of original size [2021-11-19 14:14:36,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 151 treesize of output 103 [2021-11-19 14:14:36,847 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:14:36,849 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-11-19 14:14:36,906 INFO L354 Elim1Store]: treesize reduction 72, result has 20.9 percent of original size [2021-11-19 14:14:36,907 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 2 case distinctions, treesize of input 131 treesize of output 98 [2021-11-19 14:14:39,923 INFO L354 Elim1Store]: treesize reduction 47, result has 7.8 percent of original size [2021-11-19 14:14:39,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 184 treesize of output 124 [2021-11-19 14:14:39,950 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-19 14:14:39,951 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 112 treesize of output 106 [2021-11-19 14:14:39,965 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 22 treesize of output 18 [2021-11-19 14:14:39,970 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 11 treesize of output 7 [2021-11-19 14:14:39,971 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-11-19 14:14:40,267 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:14:40,268 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-11-19 14:14:40,272 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:14:40,273 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-11-19 14:14:43,510 INFO L354 Elim1Store]: treesize reduction 223, result has 11.2 percent of original size [2021-11-19 14:14:43,511 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 255 treesize of output 262 [2021-11-19 14:14:43,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:14:43,947 INFO L354 Elim1Store]: treesize reduction 600, result has 7.3 percent of original size [2021-11-19 14:14:43,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 234 treesize of output 189 [2021-11-19 14:14:44,017 INFO L354 Elim1Store]: treesize reduction 60, result has 29.4 percent of original size [2021-11-19 14:14:44,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 223 treesize of output 227 [2021-11-19 14:14:44,136 INFO L354 Elim1Store]: treesize reduction 193, result has 11.1 percent of original size [2021-11-19 14:14:44,136 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 154 treesize of output 146 [2021-11-19 14:15:04,782 WARN L227 SmtUtils]: Spent 18.89s on a formula simplification. DAG size of input: 276 DAG size of output: 53 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-19 14:15:04,784 INFO L354 Elim1Store]: treesize reduction 1445, result has 5.7 percent of original size [2021-11-19 14:15:04,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 31 case distinctions, treesize of input 595 treesize of output 341 [2021-11-19 14:15:06,065 INFO L354 Elim1Store]: treesize reduction 1368, result has 6.4 percent of original size [2021-11-19 14:15:06,066 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 4 new quantified variables, introduced 9 case distinctions, treesize of input 632 treesize of output 527 [2021-11-19 14:15:06,082 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:15:06,086 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 750 [2021-11-19 14:15:06,102 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:15:06,105 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 717 [2021-11-19 14:15:06,114 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:15:06,117 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 754 [2021-11-19 14:15:06,360 INFO L354 Elim1Store]: treesize reduction 1420, result has 4.8 percent of original size [2021-11-19 14:15:06,361 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 4 case distinctions, treesize of input 754 treesize of output 543 [2021-11-19 14:15:06,377 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-11-19 14:15:07,006 INFO L354 Elim1Store]: treesize reduction 145, result has 2.7 percent of original size [2021-11-19 14:15:07,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 12 new quantified variables, introduced 15 case distinctions, treesize of input 310 treesize of output 132 [2021-11-19 14:15:07,064 INFO L354 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2021-11-19 14:15:07,065 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 8 new quantified variables, introduced 10 case distinctions, treesize of input 82 treesize of output 59 [2021-11-19 14:15:07,375 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 [2021-11-19 14:15:07,479 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 14:15:07,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:15:07,954 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:15:07,955 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 216 [2021-11-19 14:15:07,959 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:15:07,960 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 216 [2021-11-19 14:15:07,964 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:15:07,966 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 206 [2021-11-19 14:15:07,969 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:15:07,970 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 221 [2021-11-19 14:15:34,036 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (|ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (|v_ULTIMATE.start_dll_circular_insert_~last~1#1.offset_14| (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (= (let ((.cse7 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base|))) (let ((.cse1 (select .cse7 |c_ULTIMATE.start_dll_circular_insert_~last~1#1.offset|)) (.cse2 (bvadd (_ bv4 32) |v_ULTIMATE.start_dll_circular_insert_~last~1#1.offset_14|)) (.cse4 (bvadd (_ bv4 32) |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base|) |c_ULTIMATE.start_dll_circular_insert_~last~1#1.offset| v_DerPreprocessor_10)))) (store .cse3 |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| (store (store (select .cse3 |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|) .cse4 v_DerPreprocessor_9) |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| v_DerPreprocessor_8))))) (store .cse0 .cse1 (store (select .cse0 .cse1) .cse2 v_DerPreprocessor_7))) (select (select (let ((.cse5 (let ((.cse6 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| (store .cse7 |c_ULTIMATE.start_dll_circular_insert_~last~1#1.offset| |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|)))) (store .cse6 |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| (store (store (select .cse6 |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|) .cse4 |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base|) |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| .cse1))))) (store .cse5 .cse1 (store (select .cse5 .cse1) .cse2 |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (bvadd (_ bv8 32) (select (select (let ((.cse8 (let ((.cse9 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base|) |c_ULTIMATE.start_dll_circular_insert_~last~1#1.offset| |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|)))) (store .cse9 |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| (store (store (select .cse9 |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|) .cse4 |c_ULTIMATE.start_dll_circular_insert_~last~1#1.offset|) |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| |v_ULTIMATE.start_dll_circular_insert_~last~1#1.offset_14|))))) (store .cse8 .cse1 (store (select .cse8 .cse1) .cse2 |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))))) |c_ULTIMATE.start_main_~data~0#1|)) is different from false [2021-11-19 14:16:01,378 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:16:01,379 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 681 [2021-11-19 14:16:01,387 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:16:01,389 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 689 [2021-11-19 14:16:01,399 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:16:01,401 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1561 [2021-11-19 14:16:01,411 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:16:01,413 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2073 [2021-11-19 14:16:43,523 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (|v_ULTIMATE.start_main_~#s~0#1.offset_BEFORE_CALL_4| (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (|ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#s~0#1.base_BEFORE_CALL_4| (_ BitVec 32)) (|v_ULTIMATE.start_main_~data~0#1_BEFORE_CALL_4| (_ BitVec 32)) (|v_ULTIMATE.start_dll_circular_insert_~head#1.offset_BEFORE_CALL_2| (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (|v_ULTIMATE.start_dll_circular_insert_~last~1#1.offset_14| (_ BitVec 32)) (|v_ULTIMATE.start_dll_circular_insert_~head#1.base_BEFORE_CALL_2| (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (or (= (let ((.cse5 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_dll_circular_insert_~head#1.base_BEFORE_CALL_2|) |v_ULTIMATE.start_dll_circular_insert_~head#1.offset_BEFORE_CALL_2|))) (let ((.cse9 (select |c_#memory_$Pointer$.base| .cse5)) (.cse6 (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_dll_circular_insert_~head#1.base_BEFORE_CALL_2|) |v_ULTIMATE.start_dll_circular_insert_~head#1.offset_BEFORE_CALL_2|))) (let ((.cse1 (select .cse9 .cse6)) (.cse2 (bvadd (_ bv4 32) |v_ULTIMATE.start_dll_circular_insert_~last~1#1.offset_14|)) (.cse4 (bvadd (_ bv4 32) |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse3 (store |c_#memory_int| .cse5 (store (select |c_#memory_int| .cse5) .cse6 v_DerPreprocessor_10)))) (store .cse3 |c_node_create_#res#1.base| (store (store (select .cse3 |c_node_create_#res#1.base|) .cse4 v_DerPreprocessor_9) |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| v_DerPreprocessor_8))))) (store .cse0 .cse1 (store (select .cse0 .cse1) .cse2 v_DerPreprocessor_7))) (select (select (let ((.cse7 (let ((.cse8 (store |c_#memory_$Pointer$.base| .cse5 (store .cse9 .cse6 |c_node_create_#res#1.base|)))) (store .cse8 |c_node_create_#res#1.base| (store (store (select .cse8 |c_node_create_#res#1.base|) .cse4 .cse5) |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| .cse1))))) (store .cse7 .cse1 (store (select .cse7 .cse1) .cse2 |c_node_create_#res#1.base|))) |v_ULTIMATE.start_main_~#s~0#1.base_BEFORE_CALL_4|) |v_ULTIMATE.start_main_~#s~0#1.offset_BEFORE_CALL_4|)) (bvadd (select (select (let ((.cse10 (let ((.cse11 (store |c_#memory_$Pointer$.offset| .cse5 (store (select |c_#memory_$Pointer$.offset| .cse5) .cse6 |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|)))) (store .cse11 |c_node_create_#res#1.base| (store (store (select .cse11 |c_node_create_#res#1.base|) .cse4 .cse6) |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| |v_ULTIMATE.start_dll_circular_insert_~last~1#1.offset_14|))))) (store .cse10 .cse1 (store (select .cse10 .cse1) .cse2 |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|))) |v_ULTIMATE.start_main_~#s~0#1.base_BEFORE_CALL_4|) |v_ULTIMATE.start_main_~#s~0#1.offset_BEFORE_CALL_4|) (_ bv8 32)))))) |v_ULTIMATE.start_main_~data~0#1_BEFORE_CALL_4|) (exists ((v_DerPreprocessor_9 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32)) (v_DerPreprocessor_7 (_ BitVec 32)) (|v_node_create_~data#1_26| (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (|ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| (_ BitVec 32)) (|v_node_create_~temp~0#1.offset_28| (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (|v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21| (_ BitVec 32)) (|v_ULTIMATE.start_dll_circular_insert_~last~1#1.offset_14| (_ BitVec 32))) (and (bvult |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21| |c_#StackHeapBarrier|) (= (_ bv0 1) (bvneg (select |c_old(#valid)| |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21|))) (not (= (let ((.cse20 (bvadd (_ bv4 32) |v_node_create_~temp~0#1.offset_28|)) (.cse21 (bvadd (_ bv8 32) |v_node_create_~temp~0#1.offset_28|))) (let ((.cse24 (store |c_old(#memory_$Pointer$.base)| |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21| (store (store (store (select |c_old(#memory_$Pointer$.base)| |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21|) |v_node_create_~temp~0#1.offset_28| (_ bv0 32)) .cse20 (_ bv0 32)) .cse21 v_DerPreprocessor_13)))) (let ((.cse28 (store |c_old(#memory_$Pointer$.offset)| |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21| (store (store (store (select |c_old(#memory_$Pointer$.offset)| |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21|) |v_node_create_~temp~0#1.offset_28| (_ bv0 32)) .cse20 (_ bv0 32)) .cse21 v_DerPreprocessor_14))) (.cse18 (select (select .cse24 |v_ULTIMATE.start_dll_circular_insert_~head#1.base_BEFORE_CALL_2|) |v_ULTIMATE.start_dll_circular_insert_~head#1.offset_BEFORE_CALL_2|))) (let ((.cse25 (select .cse24 .cse18)) (.cse19 (select (select .cse28 |v_ULTIMATE.start_dll_circular_insert_~head#1.base_BEFORE_CALL_2|) |v_ULTIMATE.start_dll_circular_insert_~head#1.offset_BEFORE_CALL_2|))) (let ((.cse13 (select .cse25 .cse19)) (.cse14 (bvadd (_ bv4 32) |v_ULTIMATE.start_dll_circular_insert_~last~1#1.offset_14|)) (.cse16 (bvadd (_ bv4 32) |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|))) (select (select (let ((.cse12 (let ((.cse15 (let ((.cse17 (store |c_old(#memory_int)| |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21| (store (store (store (select |c_old(#memory_int)| |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21|) |v_node_create_~temp~0#1.offset_28| v_DerPreprocessor_12) .cse20 v_DerPreprocessor_11) .cse21 |v_node_create_~data#1_26|)))) (store .cse17 .cse18 (store (select .cse17 .cse18) .cse19 v_DerPreprocessor_10))))) (store .cse15 |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21| (store (store (select .cse15 |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21|) .cse16 v_DerPreprocessor_9) |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| v_DerPreprocessor_8))))) (store .cse12 .cse13 (store (select .cse12 .cse13) .cse14 v_DerPreprocessor_7))) (select (select (let ((.cse22 (let ((.cse23 (store .cse24 .cse18 (store .cse25 .cse19 |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21|)))) (store .cse23 |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21| (store (store (select .cse23 |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21|) .cse16 .cse18) |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| .cse13))))) (store .cse22 .cse13 (store (select .cse22 .cse13) .cse14 |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21|))) |v_ULTIMATE.start_main_~#s~0#1.base_BEFORE_CALL_4|) |v_ULTIMATE.start_main_~#s~0#1.offset_BEFORE_CALL_4|)) (bvadd (_ bv8 32) (select (select (let ((.cse26 (let ((.cse27 (store .cse28 .cse18 (store (select .cse28 .cse18) .cse19 |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|)))) (store .cse27 |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21| (store (store (select .cse27 |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21|) .cse16 .cse19) |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| |v_ULTIMATE.start_dll_circular_insert_~last~1#1.offset_14|))))) (store .cse26 .cse13 (store (select .cse26 .cse13) .cse14 |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|))) |v_ULTIMATE.start_main_~#s~0#1.base_BEFORE_CALL_4|) |v_ULTIMATE.start_main_~#s~0#1.offset_BEFORE_CALL_4|)))))))) |v_ULTIMATE.start_main_~data~0#1_BEFORE_CALL_4|)))))) is different from false [2021-11-19 14:16:45,536 WARN L860 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (|v_ULTIMATE.start_main_~#s~0#1.offset_BEFORE_CALL_4| (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (|ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#s~0#1.base_BEFORE_CALL_4| (_ BitVec 32)) (|v_ULTIMATE.start_main_~data~0#1_BEFORE_CALL_4| (_ BitVec 32)) (|v_ULTIMATE.start_dll_circular_insert_~head#1.offset_BEFORE_CALL_2| (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (|v_ULTIMATE.start_dll_circular_insert_~last~1#1.offset_14| (_ BitVec 32)) (|v_ULTIMATE.start_dll_circular_insert_~head#1.base_BEFORE_CALL_2| (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (or (= (let ((.cse5 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_dll_circular_insert_~head#1.base_BEFORE_CALL_2|) |v_ULTIMATE.start_dll_circular_insert_~head#1.offset_BEFORE_CALL_2|))) (let ((.cse9 (select |c_#memory_$Pointer$.base| .cse5)) (.cse6 (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_dll_circular_insert_~head#1.base_BEFORE_CALL_2|) |v_ULTIMATE.start_dll_circular_insert_~head#1.offset_BEFORE_CALL_2|))) (let ((.cse1 (select .cse9 .cse6)) (.cse2 (bvadd (_ bv4 32) |v_ULTIMATE.start_dll_circular_insert_~last~1#1.offset_14|)) (.cse4 (bvadd (_ bv4 32) |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse3 (store |c_#memory_int| .cse5 (store (select |c_#memory_int| .cse5) .cse6 v_DerPreprocessor_10)))) (store .cse3 |c_node_create_#res#1.base| (store (store (select .cse3 |c_node_create_#res#1.base|) .cse4 v_DerPreprocessor_9) |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| v_DerPreprocessor_8))))) (store .cse0 .cse1 (store (select .cse0 .cse1) .cse2 v_DerPreprocessor_7))) (select (select (let ((.cse7 (let ((.cse8 (store |c_#memory_$Pointer$.base| .cse5 (store .cse9 .cse6 |c_node_create_#res#1.base|)))) (store .cse8 |c_node_create_#res#1.base| (store (store (select .cse8 |c_node_create_#res#1.base|) .cse4 .cse5) |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| .cse1))))) (store .cse7 .cse1 (store (select .cse7 .cse1) .cse2 |c_node_create_#res#1.base|))) |v_ULTIMATE.start_main_~#s~0#1.base_BEFORE_CALL_4|) |v_ULTIMATE.start_main_~#s~0#1.offset_BEFORE_CALL_4|)) (bvadd (select (select (let ((.cse10 (let ((.cse11 (store |c_#memory_$Pointer$.offset| .cse5 (store (select |c_#memory_$Pointer$.offset| .cse5) .cse6 |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|)))) (store .cse11 |c_node_create_#res#1.base| (store (store (select .cse11 |c_node_create_#res#1.base|) .cse4 .cse6) |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| |v_ULTIMATE.start_dll_circular_insert_~last~1#1.offset_14|))))) (store .cse10 .cse1 (store (select .cse10 .cse1) .cse2 |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|))) |v_ULTIMATE.start_main_~#s~0#1.base_BEFORE_CALL_4|) |v_ULTIMATE.start_main_~#s~0#1.offset_BEFORE_CALL_4|) (_ bv8 32)))))) |v_ULTIMATE.start_main_~data~0#1_BEFORE_CALL_4|) (exists ((v_DerPreprocessor_9 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32)) (v_DerPreprocessor_7 (_ BitVec 32)) (|v_node_create_~data#1_26| (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (|ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| (_ BitVec 32)) (|v_node_create_~temp~0#1.offset_28| (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (|v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21| (_ BitVec 32)) (|v_ULTIMATE.start_dll_circular_insert_~last~1#1.offset_14| (_ BitVec 32))) (and (bvult |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21| |c_#StackHeapBarrier|) (= (_ bv0 1) (bvneg (select |c_old(#valid)| |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21|))) (not (= (let ((.cse20 (bvadd (_ bv4 32) |v_node_create_~temp~0#1.offset_28|)) (.cse21 (bvadd (_ bv8 32) |v_node_create_~temp~0#1.offset_28|))) (let ((.cse24 (store |c_old(#memory_$Pointer$.base)| |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21| (store (store (store (select |c_old(#memory_$Pointer$.base)| |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21|) |v_node_create_~temp~0#1.offset_28| (_ bv0 32)) .cse20 (_ bv0 32)) .cse21 v_DerPreprocessor_13)))) (let ((.cse28 (store |c_old(#memory_$Pointer$.offset)| |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21| (store (store (store (select |c_old(#memory_$Pointer$.offset)| |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21|) |v_node_create_~temp~0#1.offset_28| (_ bv0 32)) .cse20 (_ bv0 32)) .cse21 v_DerPreprocessor_14))) (.cse18 (select (select .cse24 |v_ULTIMATE.start_dll_circular_insert_~head#1.base_BEFORE_CALL_2|) |v_ULTIMATE.start_dll_circular_insert_~head#1.offset_BEFORE_CALL_2|))) (let ((.cse25 (select .cse24 .cse18)) (.cse19 (select (select .cse28 |v_ULTIMATE.start_dll_circular_insert_~head#1.base_BEFORE_CALL_2|) |v_ULTIMATE.start_dll_circular_insert_~head#1.offset_BEFORE_CALL_2|))) (let ((.cse13 (select .cse25 .cse19)) (.cse14 (bvadd (_ bv4 32) |v_ULTIMATE.start_dll_circular_insert_~last~1#1.offset_14|)) (.cse16 (bvadd (_ bv4 32) |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|))) (select (select (let ((.cse12 (let ((.cse15 (let ((.cse17 (store |c_old(#memory_int)| |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21| (store (store (store (select |c_old(#memory_int)| |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21|) |v_node_create_~temp~0#1.offset_28| v_DerPreprocessor_12) .cse20 v_DerPreprocessor_11) .cse21 |v_node_create_~data#1_26|)))) (store .cse17 .cse18 (store (select .cse17 .cse18) .cse19 v_DerPreprocessor_10))))) (store .cse15 |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21| (store (store (select .cse15 |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21|) .cse16 v_DerPreprocessor_9) |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| v_DerPreprocessor_8))))) (store .cse12 .cse13 (store (select .cse12 .cse13) .cse14 v_DerPreprocessor_7))) (select (select (let ((.cse22 (let ((.cse23 (store .cse24 .cse18 (store .cse25 .cse19 |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21|)))) (store .cse23 |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21| (store (store (select .cse23 |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21|) .cse16 .cse18) |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| .cse13))))) (store .cse22 .cse13 (store (select .cse22 .cse13) .cse14 |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21|))) |v_ULTIMATE.start_main_~#s~0#1.base_BEFORE_CALL_4|) |v_ULTIMATE.start_main_~#s~0#1.offset_BEFORE_CALL_4|)) (bvadd (_ bv8 32) (select (select (let ((.cse26 (let ((.cse27 (store .cse28 .cse18 (store (select .cse28 .cse18) .cse19 |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|)))) (store .cse27 |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21| (store (store (select .cse27 |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21|) .cse16 .cse19) |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| |v_ULTIMATE.start_dll_circular_insert_~last~1#1.offset_14|))))) (store .cse26 .cse13 (store (select .cse26 .cse13) .cse14 |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|))) |v_ULTIMATE.start_main_~#s~0#1.base_BEFORE_CALL_4|) |v_ULTIMATE.start_main_~#s~0#1.offset_BEFORE_CALL_4|)))))))) |v_ULTIMATE.start_main_~data~0#1_BEFORE_CALL_4|)))))) is different from true [2021-11-19 14:17:00,083 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:17:00,085 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2742 [2021-11-19 14:17:00,104 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:17:00,105 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2750 [2021-11-19 14:17:00,115 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:17:00,119 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3262 [2021-11-19 14:17:00,138 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:17:00,140 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4134 [2021-11-19 14:17:52,273 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~#s~0#1.offset_BEFORE_CALL_4| (_ BitVec 32)) (|node_create_~data#1| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#s~0#1.base_BEFORE_CALL_4| (_ BitVec 32)) (|node_create_~temp~0#1.offset| (_ BitVec 32)) (|v_ULTIMATE.start_dll_circular_insert_~head#1.offset_BEFORE_CALL_2| (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32)) (v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (|ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| (_ BitVec 32)) (|v_ULTIMATE.start_main_~data~0#1_BEFORE_CALL_4| (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (|v_ULTIMATE.start_dll_circular_insert_~last~1#1.offset_14| (_ BitVec 32)) (|v_ULTIMATE.start_dll_circular_insert_~head#1.base_BEFORE_CALL_2| (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (or (exists ((v_prenex_6 (_ BitVec 32)) (v_prenex_4 (_ BitVec 32)) (v_prenex_5 (_ BitVec 32)) (v_prenex_2 (_ BitVec 32)) (v_prenex_3 (_ BitVec 32)) (v_prenex_1 (_ BitVec 32)) (|v_node_create_~data#1_26| (_ BitVec 32)) (|v_node_create_~temp~0#1.offset_28| (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (|v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21| (_ BitVec 32))) (and (bvult |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21| |c_#StackHeapBarrier|) (= (_ bv0 1) (bvneg (select |c_old(#valid)| |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21|))) (not (= |v_ULTIMATE.start_main_~data~0#1_BEFORE_CALL_4| (let ((.cse8 (bvadd (_ bv4 32) |v_node_create_~temp~0#1.offset_28|)) (.cse9 (bvadd (_ bv8 32) |v_node_create_~temp~0#1.offset_28|))) (let ((.cse12 (store |c_old(#memory_$Pointer$.base)| |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21| (store (store (store (select |c_old(#memory_$Pointer$.base)| |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21|) |v_node_create_~temp~0#1.offset_28| (_ bv0 32)) .cse8 (_ bv0 32)) .cse9 v_DerPreprocessor_13)))) (let ((.cse16 (store |c_old(#memory_$Pointer$.offset)| |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21| (store (store (store (select |c_old(#memory_$Pointer$.offset)| |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21|) |v_node_create_~temp~0#1.offset_28| (_ bv0 32)) .cse8 (_ bv0 32)) .cse9 v_DerPreprocessor_14))) (.cse6 (select (select .cse12 |v_ULTIMATE.start_dll_circular_insert_~head#1.base_BEFORE_CALL_2|) |v_ULTIMATE.start_dll_circular_insert_~head#1.offset_BEFORE_CALL_2|))) (let ((.cse13 (select .cse12 .cse6)) (.cse7 (select (select .cse16 |v_ULTIMATE.start_dll_circular_insert_~head#1.base_BEFORE_CALL_2|) |v_ULTIMATE.start_dll_circular_insert_~head#1.offset_BEFORE_CALL_2|))) (let ((.cse1 (select .cse13 .cse7)) (.cse2 (bvadd (_ bv4 32) v_prenex_6)) (.cse4 (bvadd (_ bv4 32) v_prenex_5))) (select (select (let ((.cse0 (let ((.cse3 (let ((.cse5 (store |c_old(#memory_int)| |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21| (store (store (store (select |c_old(#memory_int)| |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21|) |v_node_create_~temp~0#1.offset_28| v_DerPreprocessor_12) .cse8 v_DerPreprocessor_11) .cse9 |v_node_create_~data#1_26|)))) (store .cse5 .cse6 (store (select .cse5 .cse6) .cse7 v_prenex_4))))) (store .cse3 |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21| (store (store (select .cse3 |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21|) .cse4 v_prenex_1) v_prenex_5 v_prenex_2))))) (store .cse0 .cse1 (store (select .cse0 .cse1) .cse2 v_prenex_3))) (select (select (let ((.cse10 (let ((.cse11 (store .cse12 .cse6 (store .cse13 .cse7 |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21|)))) (store .cse11 |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21| (store (store (select .cse11 |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21|) .cse4 .cse6) v_prenex_5 .cse1))))) (store .cse10 .cse1 (store (select .cse10 .cse1) .cse2 |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21|))) |v_ULTIMATE.start_main_~#s~0#1.base_BEFORE_CALL_4|) |v_ULTIMATE.start_main_~#s~0#1.offset_BEFORE_CALL_4|)) (bvadd (_ bv8 32) (select (select (let ((.cse14 (let ((.cse15 (store .cse16 .cse6 (store (select .cse16 .cse6) .cse7 v_prenex_5)))) (store .cse15 |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21| (store (store (select .cse15 |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21|) .cse4 .cse7) v_prenex_5 v_prenex_6))))) (store .cse14 .cse1 (store (select .cse14 .cse1) .cse2 v_prenex_5))) |v_ULTIMATE.start_main_~#s~0#1.base_BEFORE_CALL_4|) |v_ULTIMATE.start_main_~#s~0#1.offset_BEFORE_CALL_4|)))))))))))) (= |v_ULTIMATE.start_main_~data~0#1_BEFORE_CALL_4| (let ((.cse25 (bvadd (_ bv4 32) |node_create_~temp~0#1.offset|)) (.cse26 (bvadd |node_create_~temp~0#1.offset| (_ bv8 32)))) (let ((.cse29 (store |c_#memory_$Pointer$.base| |c_node_create_~temp~0#1.base| (store (store (store (select |c_#memory_$Pointer$.base| |c_node_create_~temp~0#1.base|) |node_create_~temp~0#1.offset| (_ bv0 32)) .cse25 (_ bv0 32)) .cse26 v_DerPreprocessor_18)))) (let ((.cse33 (store |c_#memory_$Pointer$.offset| |c_node_create_~temp~0#1.base| (store (store (store (select |c_#memory_$Pointer$.offset| |c_node_create_~temp~0#1.base|) |node_create_~temp~0#1.offset| (_ bv0 32)) .cse25 (_ bv0 32)) .cse26 v_DerPreprocessor_17))) (.cse23 (select (select .cse29 |v_ULTIMATE.start_dll_circular_insert_~head#1.base_BEFORE_CALL_2|) |v_ULTIMATE.start_dll_circular_insert_~head#1.offset_BEFORE_CALL_2|))) (let ((.cse30 (select .cse29 .cse23)) (.cse24 (select (select .cse33 |v_ULTIMATE.start_dll_circular_insert_~head#1.base_BEFORE_CALL_2|) |v_ULTIMATE.start_dll_circular_insert_~head#1.offset_BEFORE_CALL_2|))) (let ((.cse18 (select .cse30 .cse24)) (.cse19 (bvadd (_ bv4 32) |v_ULTIMATE.start_dll_circular_insert_~last~1#1.offset_14|)) (.cse21 (bvadd (_ bv4 32) |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|))) (select (select (let ((.cse17 (let ((.cse20 (let ((.cse22 (store |c_#memory_int| |c_node_create_~temp~0#1.base| (store (store (store (select |c_#memory_int| |c_node_create_~temp~0#1.base|) |node_create_~temp~0#1.offset| v_DerPreprocessor_16) .cse25 v_DerPreprocessor_15) .cse26 |node_create_~data#1|)))) (store .cse22 .cse23 (store (select .cse22 .cse23) .cse24 v_DerPreprocessor_10))))) (store .cse20 |c_node_create_~temp~0#1.base| (store (store (select .cse20 |c_node_create_~temp~0#1.base|) .cse21 v_DerPreprocessor_9) |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| v_DerPreprocessor_8))))) (store .cse17 .cse18 (store (select .cse17 .cse18) .cse19 v_DerPreprocessor_7))) (select (select (let ((.cse27 (let ((.cse28 (store .cse29 .cse23 (store .cse30 .cse24 |c_node_create_~temp~0#1.base|)))) (store .cse28 |c_node_create_~temp~0#1.base| (store (store (select .cse28 |c_node_create_~temp~0#1.base|) .cse21 .cse23) |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| .cse18))))) (store .cse27 .cse18 (store (select .cse27 .cse18) .cse19 |c_node_create_~temp~0#1.base|))) |v_ULTIMATE.start_main_~#s~0#1.base_BEFORE_CALL_4|) |v_ULTIMATE.start_main_~#s~0#1.offset_BEFORE_CALL_4|)) (bvadd (_ bv8 32) (select (select (let ((.cse31 (let ((.cse32 (store .cse33 .cse23 (store (select .cse33 .cse23) .cse24 |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|)))) (store .cse32 |c_node_create_~temp~0#1.base| (store (store (select .cse32 |c_node_create_~temp~0#1.base|) .cse21 .cse24) |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| |v_ULTIMATE.start_dll_circular_insert_~last~1#1.offset_14|))))) (store .cse31 .cse18 (store (select .cse31 .cse18) .cse19 |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|))) |v_ULTIMATE.start_main_~#s~0#1.base_BEFORE_CALL_4|) |v_ULTIMATE.start_main_~#s~0#1.offset_BEFORE_CALL_4|))))))))))) is different from false [2021-11-19 14:17:54,278 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~#s~0#1.offset_BEFORE_CALL_4| (_ BitVec 32)) (|node_create_~data#1| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#s~0#1.base_BEFORE_CALL_4| (_ BitVec 32)) (|node_create_~temp~0#1.offset| (_ BitVec 32)) (|v_ULTIMATE.start_dll_circular_insert_~head#1.offset_BEFORE_CALL_2| (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32)) (v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (|ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| (_ BitVec 32)) (|v_ULTIMATE.start_main_~data~0#1_BEFORE_CALL_4| (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (|v_ULTIMATE.start_dll_circular_insert_~last~1#1.offset_14| (_ BitVec 32)) (|v_ULTIMATE.start_dll_circular_insert_~head#1.base_BEFORE_CALL_2| (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (or (exists ((v_prenex_6 (_ BitVec 32)) (v_prenex_4 (_ BitVec 32)) (v_prenex_5 (_ BitVec 32)) (v_prenex_2 (_ BitVec 32)) (v_prenex_3 (_ BitVec 32)) (v_prenex_1 (_ BitVec 32)) (|v_node_create_~data#1_26| (_ BitVec 32)) (|v_node_create_~temp~0#1.offset_28| (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (|v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21| (_ BitVec 32))) (and (bvult |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21| |c_#StackHeapBarrier|) (= (_ bv0 1) (bvneg (select |c_old(#valid)| |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21|))) (not (= |v_ULTIMATE.start_main_~data~0#1_BEFORE_CALL_4| (let ((.cse8 (bvadd (_ bv4 32) |v_node_create_~temp~0#1.offset_28|)) (.cse9 (bvadd (_ bv8 32) |v_node_create_~temp~0#1.offset_28|))) (let ((.cse12 (store |c_old(#memory_$Pointer$.base)| |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21| (store (store (store (select |c_old(#memory_$Pointer$.base)| |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21|) |v_node_create_~temp~0#1.offset_28| (_ bv0 32)) .cse8 (_ bv0 32)) .cse9 v_DerPreprocessor_13)))) (let ((.cse16 (store |c_old(#memory_$Pointer$.offset)| |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21| (store (store (store (select |c_old(#memory_$Pointer$.offset)| |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21|) |v_node_create_~temp~0#1.offset_28| (_ bv0 32)) .cse8 (_ bv0 32)) .cse9 v_DerPreprocessor_14))) (.cse6 (select (select .cse12 |v_ULTIMATE.start_dll_circular_insert_~head#1.base_BEFORE_CALL_2|) |v_ULTIMATE.start_dll_circular_insert_~head#1.offset_BEFORE_CALL_2|))) (let ((.cse13 (select .cse12 .cse6)) (.cse7 (select (select .cse16 |v_ULTIMATE.start_dll_circular_insert_~head#1.base_BEFORE_CALL_2|) |v_ULTIMATE.start_dll_circular_insert_~head#1.offset_BEFORE_CALL_2|))) (let ((.cse1 (select .cse13 .cse7)) (.cse2 (bvadd (_ bv4 32) v_prenex_6)) (.cse4 (bvadd (_ bv4 32) v_prenex_5))) (select (select (let ((.cse0 (let ((.cse3 (let ((.cse5 (store |c_old(#memory_int)| |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21| (store (store (store (select |c_old(#memory_int)| |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21|) |v_node_create_~temp~0#1.offset_28| v_DerPreprocessor_12) .cse8 v_DerPreprocessor_11) .cse9 |v_node_create_~data#1_26|)))) (store .cse5 .cse6 (store (select .cse5 .cse6) .cse7 v_prenex_4))))) (store .cse3 |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21| (store (store (select .cse3 |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21|) .cse4 v_prenex_1) v_prenex_5 v_prenex_2))))) (store .cse0 .cse1 (store (select .cse0 .cse1) .cse2 v_prenex_3))) (select (select (let ((.cse10 (let ((.cse11 (store .cse12 .cse6 (store .cse13 .cse7 |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21|)))) (store .cse11 |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21| (store (store (select .cse11 |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21|) .cse4 .cse6) v_prenex_5 .cse1))))) (store .cse10 .cse1 (store (select .cse10 .cse1) .cse2 |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21|))) |v_ULTIMATE.start_main_~#s~0#1.base_BEFORE_CALL_4|) |v_ULTIMATE.start_main_~#s~0#1.offset_BEFORE_CALL_4|)) (bvadd (_ bv8 32) (select (select (let ((.cse14 (let ((.cse15 (store .cse16 .cse6 (store (select .cse16 .cse6) .cse7 v_prenex_5)))) (store .cse15 |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21| (store (store (select .cse15 |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21|) .cse4 .cse7) v_prenex_5 v_prenex_6))))) (store .cse14 .cse1 (store (select .cse14 .cse1) .cse2 v_prenex_5))) |v_ULTIMATE.start_main_~#s~0#1.base_BEFORE_CALL_4|) |v_ULTIMATE.start_main_~#s~0#1.offset_BEFORE_CALL_4|)))))))))))) (= |v_ULTIMATE.start_main_~data~0#1_BEFORE_CALL_4| (let ((.cse25 (bvadd (_ bv4 32) |node_create_~temp~0#1.offset|)) (.cse26 (bvadd |node_create_~temp~0#1.offset| (_ bv8 32)))) (let ((.cse29 (store |c_#memory_$Pointer$.base| |c_node_create_~temp~0#1.base| (store (store (store (select |c_#memory_$Pointer$.base| |c_node_create_~temp~0#1.base|) |node_create_~temp~0#1.offset| (_ bv0 32)) .cse25 (_ bv0 32)) .cse26 v_DerPreprocessor_18)))) (let ((.cse33 (store |c_#memory_$Pointer$.offset| |c_node_create_~temp~0#1.base| (store (store (store (select |c_#memory_$Pointer$.offset| |c_node_create_~temp~0#1.base|) |node_create_~temp~0#1.offset| (_ bv0 32)) .cse25 (_ bv0 32)) .cse26 v_DerPreprocessor_17))) (.cse23 (select (select .cse29 |v_ULTIMATE.start_dll_circular_insert_~head#1.base_BEFORE_CALL_2|) |v_ULTIMATE.start_dll_circular_insert_~head#1.offset_BEFORE_CALL_2|))) (let ((.cse30 (select .cse29 .cse23)) (.cse24 (select (select .cse33 |v_ULTIMATE.start_dll_circular_insert_~head#1.base_BEFORE_CALL_2|) |v_ULTIMATE.start_dll_circular_insert_~head#1.offset_BEFORE_CALL_2|))) (let ((.cse18 (select .cse30 .cse24)) (.cse19 (bvadd (_ bv4 32) |v_ULTIMATE.start_dll_circular_insert_~last~1#1.offset_14|)) (.cse21 (bvadd (_ bv4 32) |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|))) (select (select (let ((.cse17 (let ((.cse20 (let ((.cse22 (store |c_#memory_int| |c_node_create_~temp~0#1.base| (store (store (store (select |c_#memory_int| |c_node_create_~temp~0#1.base|) |node_create_~temp~0#1.offset| v_DerPreprocessor_16) .cse25 v_DerPreprocessor_15) .cse26 |node_create_~data#1|)))) (store .cse22 .cse23 (store (select .cse22 .cse23) .cse24 v_DerPreprocessor_10))))) (store .cse20 |c_node_create_~temp~0#1.base| (store (store (select .cse20 |c_node_create_~temp~0#1.base|) .cse21 v_DerPreprocessor_9) |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| v_DerPreprocessor_8))))) (store .cse17 .cse18 (store (select .cse17 .cse18) .cse19 v_DerPreprocessor_7))) (select (select (let ((.cse27 (let ((.cse28 (store .cse29 .cse23 (store .cse30 .cse24 |c_node_create_~temp~0#1.base|)))) (store .cse28 |c_node_create_~temp~0#1.base| (store (store (select .cse28 |c_node_create_~temp~0#1.base|) .cse21 .cse23) |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| .cse18))))) (store .cse27 .cse18 (store (select .cse27 .cse18) .cse19 |c_node_create_~temp~0#1.base|))) |v_ULTIMATE.start_main_~#s~0#1.base_BEFORE_CALL_4|) |v_ULTIMATE.start_main_~#s~0#1.offset_BEFORE_CALL_4|)) (bvadd (_ bv8 32) (select (select (let ((.cse31 (let ((.cse32 (store .cse33 .cse23 (store (select .cse33 .cse23) .cse24 |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|)))) (store .cse32 |c_node_create_~temp~0#1.base| (store (store (select .cse32 |c_node_create_~temp~0#1.base|) .cse21 .cse24) |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| |v_ULTIMATE.start_dll_circular_insert_~last~1#1.offset_14|))))) (store .cse31 .cse18 (store (select .cse31 .cse18) .cse19 |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|))) |v_ULTIMATE.start_main_~#s~0#1.base_BEFORE_CALL_4|) |v_ULTIMATE.start_main_~#s~0#1.offset_BEFORE_CALL_4|))))))))))) is different from true [2021-11-19 14:20:00,650 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_node_create_~temp~0#1.base_29| (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_node_create_~temp~0#1.base_29|)))) (forall ((|v_ULTIMATE.start_main_~#s~0#1.offset_BEFORE_CALL_4| (_ BitVec 32)) (|node_create_~data#1| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#s~0#1.base_BEFORE_CALL_4| (_ BitVec 32)) (|node_create_~temp~0#1.offset| (_ BitVec 32)) (|v_ULTIMATE.start_dll_circular_insert_~head#1.offset_BEFORE_CALL_2| (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32)) (v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (|ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| (_ BitVec 32)) (|v_ULTIMATE.start_main_~data~0#1_BEFORE_CALL_4| (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (|v_ULTIMATE.start_dll_circular_insert_~last~1#1.offset_14| (_ BitVec 32)) (|v_ULTIMATE.start_dll_circular_insert_~head#1.base_BEFORE_CALL_2| (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (or (= |v_ULTIMATE.start_main_~data~0#1_BEFORE_CALL_4| (let ((.cse8 (bvadd (_ bv4 32) |node_create_~temp~0#1.offset|)) (.cse9 (bvadd |node_create_~temp~0#1.offset| (_ bv8 32)))) (let ((.cse12 (store |c_#memory_$Pointer$.base| |v_node_create_~temp~0#1.base_29| (store (store (store (select |c_#memory_$Pointer$.base| |v_node_create_~temp~0#1.base_29|) |node_create_~temp~0#1.offset| (_ bv0 32)) .cse8 (_ bv0 32)) .cse9 v_DerPreprocessor_18)))) (let ((.cse16 (store |c_#memory_$Pointer$.offset| |v_node_create_~temp~0#1.base_29| (store (store (store (select |c_#memory_$Pointer$.offset| |v_node_create_~temp~0#1.base_29|) |node_create_~temp~0#1.offset| (_ bv0 32)) .cse8 (_ bv0 32)) .cse9 v_DerPreprocessor_17))) (.cse6 (select (select .cse12 |v_ULTIMATE.start_dll_circular_insert_~head#1.base_BEFORE_CALL_2|) |v_ULTIMATE.start_dll_circular_insert_~head#1.offset_BEFORE_CALL_2|))) (let ((.cse13 (select .cse12 .cse6)) (.cse7 (select (select .cse16 |v_ULTIMATE.start_dll_circular_insert_~head#1.base_BEFORE_CALL_2|) |v_ULTIMATE.start_dll_circular_insert_~head#1.offset_BEFORE_CALL_2|))) (let ((.cse1 (select .cse13 .cse7)) (.cse2 (bvadd (_ bv4 32) |v_ULTIMATE.start_dll_circular_insert_~last~1#1.offset_14|)) (.cse4 (bvadd (_ bv4 32) |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse3 (let ((.cse5 (store |c_#memory_int| |v_node_create_~temp~0#1.base_29| (store (store (store (select |c_#memory_int| |v_node_create_~temp~0#1.base_29|) |node_create_~temp~0#1.offset| v_DerPreprocessor_16) .cse8 v_DerPreprocessor_15) .cse9 |node_create_~data#1|)))) (store .cse5 .cse6 (store (select .cse5 .cse6) .cse7 v_DerPreprocessor_10))))) (store .cse3 |v_node_create_~temp~0#1.base_29| (store (store (select .cse3 |v_node_create_~temp~0#1.base_29|) .cse4 v_DerPreprocessor_9) |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| v_DerPreprocessor_8))))) (store .cse0 .cse1 (store (select .cse0 .cse1) .cse2 v_DerPreprocessor_7))) (select (select (let ((.cse10 (let ((.cse11 (store .cse12 .cse6 (store .cse13 .cse7 |v_node_create_~temp~0#1.base_29|)))) (store .cse11 |v_node_create_~temp~0#1.base_29| (store (store (select .cse11 |v_node_create_~temp~0#1.base_29|) .cse4 .cse6) |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| .cse1))))) (store .cse10 .cse1 (store (select .cse10 .cse1) .cse2 |v_node_create_~temp~0#1.base_29|))) |v_ULTIMATE.start_main_~#s~0#1.base_BEFORE_CALL_4|) |v_ULTIMATE.start_main_~#s~0#1.offset_BEFORE_CALL_4|)) (bvadd (select (select (let ((.cse14 (let ((.cse15 (store .cse16 .cse6 (store (select .cse16 .cse6) .cse7 |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|)))) (store .cse15 |v_node_create_~temp~0#1.base_29| (store (store (select .cse15 |v_node_create_~temp~0#1.base_29|) .cse4 .cse7) |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| |v_ULTIMATE.start_dll_circular_insert_~last~1#1.offset_14|))))) (store .cse14 .cse1 (store (select .cse14 .cse1) .cse2 |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|))) |v_ULTIMATE.start_main_~#s~0#1.base_BEFORE_CALL_4|) |v_ULTIMATE.start_main_~#s~0#1.offset_BEFORE_CALL_4|) (_ bv8 32))))))))) (exists ((v_prenex_6 (_ BitVec 32)) (v_prenex_4 (_ BitVec 32)) (v_prenex_5 (_ BitVec 32)) (v_prenex_2 (_ BitVec 32)) (v_prenex_3 (_ BitVec 32)) (v_prenex_1 (_ BitVec 32)) (|v_node_create_~data#1_26| (_ BitVec 32)) (|v_node_create_~temp~0#1.offset_28| (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (|v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21| (_ BitVec 32))) (and (bvult |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21| |c_#StackHeapBarrier|) (= (_ bv0 1) (bvneg (select |c_old(#valid)| |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21|))) (not (= |v_ULTIMATE.start_main_~data~0#1_BEFORE_CALL_4| (let ((.cse25 (bvadd (_ bv4 32) |v_node_create_~temp~0#1.offset_28|)) (.cse26 (bvadd (_ bv8 32) |v_node_create_~temp~0#1.offset_28|))) (let ((.cse29 (store |c_old(#memory_$Pointer$.base)| |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21| (store (store (store (select |c_old(#memory_$Pointer$.base)| |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21|) |v_node_create_~temp~0#1.offset_28| (_ bv0 32)) .cse25 (_ bv0 32)) .cse26 v_DerPreprocessor_13)))) (let ((.cse33 (store |c_old(#memory_$Pointer$.offset)| |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21| (store (store (store (select |c_old(#memory_$Pointer$.offset)| |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21|) |v_node_create_~temp~0#1.offset_28| (_ bv0 32)) .cse25 (_ bv0 32)) .cse26 v_DerPreprocessor_14))) (.cse23 (select (select .cse29 |v_ULTIMATE.start_dll_circular_insert_~head#1.base_BEFORE_CALL_2|) |v_ULTIMATE.start_dll_circular_insert_~head#1.offset_BEFORE_CALL_2|))) (let ((.cse30 (select .cse29 .cse23)) (.cse24 (select (select .cse33 |v_ULTIMATE.start_dll_circular_insert_~head#1.base_BEFORE_CALL_2|) |v_ULTIMATE.start_dll_circular_insert_~head#1.offset_BEFORE_CALL_2|))) (let ((.cse18 (select .cse30 .cse24)) (.cse19 (bvadd (_ bv4 32) v_prenex_6)) (.cse21 (bvadd (_ bv4 32) v_prenex_5))) (select (select (let ((.cse17 (let ((.cse20 (let ((.cse22 (store |c_old(#memory_int)| |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21| (store (store (store (select |c_old(#memory_int)| |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21|) |v_node_create_~temp~0#1.offset_28| v_DerPreprocessor_12) .cse25 v_DerPreprocessor_11) .cse26 |v_node_create_~data#1_26|)))) (store .cse22 .cse23 (store (select .cse22 .cse23) .cse24 v_prenex_4))))) (store .cse20 |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21| (store (store (select .cse20 |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21|) .cse21 v_prenex_1) v_prenex_5 v_prenex_2))))) (store .cse17 .cse18 (store (select .cse17 .cse18) .cse19 v_prenex_3))) (select (select (let ((.cse27 (let ((.cse28 (store .cse29 .cse23 (store .cse30 .cse24 |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21|)))) (store .cse28 |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21| (store (store (select .cse28 |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21|) .cse21 .cse23) v_prenex_5 .cse18))))) (store .cse27 .cse18 (store (select .cse27 .cse18) .cse19 |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21|))) |v_ULTIMATE.start_main_~#s~0#1.base_BEFORE_CALL_4|) |v_ULTIMATE.start_main_~#s~0#1.offset_BEFORE_CALL_4|)) (bvadd (_ bv8 32) (select (select (let ((.cse31 (let ((.cse32 (store .cse33 .cse23 (store (select .cse33 .cse23) .cse24 v_prenex_5)))) (store .cse32 |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21| (store (store (select .cse32 |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_21|) .cse21 .cse24) v_prenex_5 v_prenex_6))))) (store .cse31 .cse18 (store (select .cse31 .cse18) .cse19 v_prenex_5))) |v_ULTIMATE.start_main_~#s~0#1.base_BEFORE_CALL_4|) |v_ULTIMATE.start_main_~#s~0#1.offset_BEFORE_CALL_4|)))))))))))))) (not (bvult |v_node_create_~temp~0#1.base_29| |c_#StackHeapBarrier|)))) is different from true [2021-11-19 14:20:00,818 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39019031828 treesize of output 38761278640