./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f26883-2d65-4ec5-91bd-5d5fb78292d2/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f26883-2d65-4ec5-91bd-5d5fb78292d2/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f26883-2d65-4ec5-91bd-5d5fb78292d2/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f26883-2d65-4ec5-91bd-5d5fb78292d2/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f26883-2d65-4ec5-91bd-5d5fb78292d2/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f26883-2d65-4ec5-91bd-5d5fb78292d2/bin/utaipan-TEXQjIfE4P --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 10aecdd717bb6691571ad1da0b912f030832fb85361f767ea82293acfe046216 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:45:53,172 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:45:53,175 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:45:53,233 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:45:53,234 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:45:53,238 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:45:53,240 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:45:53,243 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:45:53,246 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:45:53,251 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:45:53,253 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:45:53,255 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:45:53,255 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:45:53,258 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:45:53,260 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:45:53,269 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:45:53,270 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:45:53,272 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:45:53,274 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:45:53,282 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:45:53,284 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:45:53,286 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:45:53,289 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:45:53,290 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:45:53,300 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:45:53,301 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:45:53,302 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:45:53,304 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:45:53,305 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:45:53,306 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:45:53,307 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:45:53,308 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:45:53,311 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:45:53,312 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:45:53,314 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:45:53,314 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:45:53,315 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:45:53,316 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:45:53,316 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:45:53,317 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:45:53,318 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:45:53,319 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f26883-2d65-4ec5-91bd-5d5fb78292d2/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-21 00:45:53,367 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:45:53,367 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:45:53,367 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:45:53,368 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:45:53,369 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:45:53,369 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:45:53,369 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:45:53,369 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:45:53,370 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:45:53,370 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 00:45:53,371 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:45:53,371 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:45:53,371 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 00:45:53,372 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 00:45:53,372 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:45:53,372 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 00:45:53,372 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 00:45:53,372 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 00:45:53,373 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:45:53,373 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 00:45:53,374 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:45:53,374 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 00:45:53,374 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:45:53,374 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:45:53,374 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:45:53,375 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:45:53,376 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 00:45:53,376 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:45:53,377 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:45:53,377 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:45:53,377 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:45:53,377 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:45:53,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:45:53,378 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:45:53,378 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:45:53,378 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:45:53,379 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 00:45:53,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 00:45:53,379 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:45:53,379 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:45:53,379 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:45:53,380 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_24f26883-2d65-4ec5-91bd-5d5fb78292d2/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f26883-2d65-4ec5-91bd-5d5fb78292d2/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 10aecdd717bb6691571ad1da0b912f030832fb85361f767ea82293acfe046216 [2021-11-21 00:45:53,684 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:45:53,709 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:45:53,712 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:45:53,713 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:45:53,714 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:45:53,715 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f26883-2d65-4ec5-91bd-5d5fb78292d2/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i [2021-11-21 00:45:53,804 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f26883-2d65-4ec5-91bd-5d5fb78292d2/bin/utaipan-TEXQjIfE4P/data/fb73bb630/b8cd3d4475714fccb3dfc6447f541720/FLAGad6005435 [2021-11-21 00:45:54,317 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:45:54,318 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f26883-2d65-4ec5-91bd-5d5fb78292d2/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i [2021-11-21 00:45:54,338 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f26883-2d65-4ec5-91bd-5d5fb78292d2/bin/utaipan-TEXQjIfE4P/data/fb73bb630/b8cd3d4475714fccb3dfc6447f541720/FLAGad6005435 [2021-11-21 00:45:54,629 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f26883-2d65-4ec5-91bd-5d5fb78292d2/bin/utaipan-TEXQjIfE4P/data/fb73bb630/b8cd3d4475714fccb3dfc6447f541720 [2021-11-21 00:45:54,632 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:45:54,633 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:45:54,637 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:45:54,638 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:45:54,641 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:45:54,642 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:45:54" (1/1) ... [2021-11-21 00:45:54,643 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@316f0b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:45:54, skipping insertion in model container [2021-11-21 00:45:54,644 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:45:54" (1/1) ... [2021-11-21 00:45:54,651 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:45:54,714 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:45:55,041 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_24f26883-2d65-4ec5-91bd-5d5fb78292d2/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i[26271,26284] [2021-11-21 00:45:55,045 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_24f26883-2d65-4ec5-91bd-5d5fb78292d2/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i[26396,26409] [2021-11-21 00:45:55,047 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_24f26883-2d65-4ec5-91bd-5d5fb78292d2/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i[26511,26524] [2021-11-21 00:45:55,059 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:45:55,073 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:45:55,154 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_24f26883-2d65-4ec5-91bd-5d5fb78292d2/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i[26271,26284] [2021-11-21 00:45:55,155 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_24f26883-2d65-4ec5-91bd-5d5fb78292d2/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i[26396,26409] [2021-11-21 00:45:55,156 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_24f26883-2d65-4ec5-91bd-5d5fb78292d2/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i[26511,26524] [2021-11-21 00:45:55,164 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:45:55,194 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:45:55,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:45:55 WrapperNode [2021-11-21 00:45:55,195 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:45:55,196 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:45:55,196 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:45:55,196 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:45:55,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:45:55" (1/1) ... [2021-11-21 00:45:55,221 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:45:55" (1/1) ... [2021-11-21 00:45:55,250 INFO L137 Inliner]: procedures = 142, calls = 62, calls flagged for inlining = 15, calls inlined = 14, statements flattened = 161 [2021-11-21 00:45:55,250 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:45:55,251 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:45:55,251 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:45:55,251 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:45:55,260 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:45:55" (1/1) ... [2021-11-21 00:45:55,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:45:55" (1/1) ... [2021-11-21 00:45:55,265 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:45:55" (1/1) ... [2021-11-21 00:45:55,266 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:45:55" (1/1) ... [2021-11-21 00:45:55,278 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:45:55" (1/1) ... [2021-11-21 00:45:55,283 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:45:55" (1/1) ... [2021-11-21 00:45:55,286 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:45:55" (1/1) ... [2021-11-21 00:45:55,291 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:45:55,292 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:45:55,292 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:45:55,292 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:45:55,293 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:45:55" (1/1) ... [2021-11-21 00:45:55,305 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:45:55,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f26883-2d65-4ec5-91bd-5d5fb78292d2/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:45:55,336 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f26883-2d65-4ec5-91bd-5d5fb78292d2/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:45:55,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f26883-2d65-4ec5-91bd-5d5fb78292d2/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:45:55,376 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2021-11-21 00:45:55,376 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2021-11-21 00:45:55,376 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2021-11-21 00:45:55,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2021-11-21 00:45:55,377 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 00:45:55,377 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:45:55,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 00:45:55,377 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2021-11-21 00:45:55,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2021-11-21 00:45:55,377 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 00:45:55,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 00:45:55,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 00:45:55,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 00:45:55,378 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2021-11-21 00:45:55,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2021-11-21 00:45:55,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:45:55,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:45:55,509 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:45:55,513 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:45:55,987 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:45:56,093 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:45:56,094 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-21 00:45:56,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:45:56 BoogieIcfgContainer [2021-11-21 00:45:56,097 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:45:56,099 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:45:56,099 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:45:56,103 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:45:56,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:45:54" (1/3) ... [2021-11-21 00:45:56,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3568f227 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:45:56, skipping insertion in model container [2021-11-21 00:45:56,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:45:55" (2/3) ... [2021-11-21 00:45:56,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3568f227 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:45:56, skipping insertion in model container [2021-11-21 00:45:56,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:45:56" (3/3) ... [2021-11-21 00:45:56,107 INFO L111 eAbstractionObserver]: Analyzing ICFG test_mutex_unbounded-1.i [2021-11-21 00:45:56,114 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:45:56,114 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-21 00:45:56,170 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:45:56,177 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 [2021-11-21 00:45:56,177 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-21 00:45:56,194 INFO L276 IsEmpty]: Start isEmpty. Operand has 46 states, 30 states have (on average 1.4333333333333333) internal successors, (43), 34 states have internal predecessors, (43), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-21 00:45:56,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-21 00:45:56,199 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:45:56,200 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-21 00:45:56,200 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:45:56,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:45:56,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1976968745, now seen corresponding path program 1 times [2021-11-21 00:45:56,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:45:56,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567812365] [2021-11-21 00:45:56,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:45:56,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:45:56,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:45:56,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:45:56,471 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:45:56,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567812365] [2021-11-21 00:45:56,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567812365] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:45:56,472 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:45:56,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:45:56,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850013127] [2021-11-21 00:45:56,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:45:56,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:45:56,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:45:56,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:45:56,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:45:56,515 INFO L87 Difference]: Start difference. First operand has 46 states, 30 states have (on average 1.4333333333333333) internal successors, (43), 34 states have internal predecessors, (43), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:45:56,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:45:56,729 INFO L93 Difference]: Finished difference Result 124 states and 161 transitions. [2021-11-21 00:45:56,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:45:56,732 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-21 00:45:56,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:45:56,744 INFO L225 Difference]: With dead ends: 124 [2021-11-21 00:45:56,744 INFO L226 Difference]: Without dead ends: 79 [2021-11-21 00:45:56,748 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:45:56,753 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 41 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:45:56,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 122 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:45:56,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-11-21 00:45:56,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 65. [2021-11-21 00:45:56,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 46 states have (on average 1.3695652173913044) internal successors, (63), 49 states have internal predecessors, (63), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-21 00:45:56,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 85 transitions. [2021-11-21 00:45:56,848 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 85 transitions. Word has length 6 [2021-11-21 00:45:56,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:45:56,848 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 85 transitions. [2021-11-21 00:45:56,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:45:56,849 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 85 transitions. [2021-11-21 00:45:56,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-21 00:45:56,853 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:45:56,853 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:45:56,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 00:45:56,854 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:45:56,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:45:56,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1295928281, now seen corresponding path program 1 times [2021-11-21 00:45:56,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:45:56,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889633257] [2021-11-21 00:45:56,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:45:56,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:45:56,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:45:56,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:45:56,959 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:45:56,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889633257] [2021-11-21 00:45:56,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889633257] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:45:56,961 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:45:56,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:45:56,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351194585] [2021-11-21 00:45:56,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:45:56,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:45:56,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:45:56,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:45:56,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:45:56,969 INFO L87 Difference]: Start difference. First operand 65 states and 85 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-21 00:45:57,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:45:57,070 INFO L93 Difference]: Finished difference Result 75 states and 100 transitions. [2021-11-21 00:45:57,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:45:57,071 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-11-21 00:45:57,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:45:57,073 INFO L225 Difference]: With dead ends: 75 [2021-11-21 00:45:57,074 INFO L226 Difference]: Without dead ends: 73 [2021-11-21 00:45:57,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:45:57,081 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 0 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:45:57,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 117 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:45:57,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-11-21 00:45:57,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-11-21 00:45:57,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 52 states have (on average 1.3269230769230769) internal successors, (69), 55 states have internal predecessors, (69), 11 states have call successors, (11), 5 states have call predecessors, (11), 7 states have return successors, (17), 13 states have call predecessors, (17), 11 states have call successors, (17) [2021-11-21 00:45:57,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 97 transitions. [2021-11-21 00:45:57,107 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 97 transitions. Word has length 11 [2021-11-21 00:45:57,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:45:57,108 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 97 transitions. [2021-11-21 00:45:57,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-21 00:45:57,109 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 97 transitions. [2021-11-21 00:45:57,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-21 00:45:57,110 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:45:57,110 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:45:57,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 00:45:57,111 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:45:57,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:45:57,112 INFO L85 PathProgramCache]: Analyzing trace with hash -349854364, now seen corresponding path program 1 times [2021-11-21 00:45:57,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:45:57,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554373241] [2021-11-21 00:45:57,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:45:57,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:45:57,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:45:57,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:45:57,209 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:45:57,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554373241] [2021-11-21 00:45:57,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554373241] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:45:57,210 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:45:57,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:45:57,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044612898] [2021-11-21 00:45:57,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:45:57,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:45:57,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:45:57,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:45:57,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:45:57,212 INFO L87 Difference]: Start difference. First operand 73 states and 97 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-21 00:45:57,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:45:57,341 INFO L93 Difference]: Finished difference Result 125 states and 161 transitions. [2021-11-21 00:45:57,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:45:57,343 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-11-21 00:45:57,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:45:57,346 INFO L225 Difference]: With dead ends: 125 [2021-11-21 00:45:57,346 INFO L226 Difference]: Without dead ends: 57 [2021-11-21 00:45:57,347 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 [2021-11-21 00:45:57,349 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 11 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:45:57,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 113 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:45:57,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-11-21 00:45:57,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 52. [2021-11-21 00:45:57,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 34 states have (on average 1.2647058823529411) internal successors, (43), 38 states have internal predecessors, (43), 9 states have call successors, (9), 5 states have call predecessors, (9), 6 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2021-11-21 00:45:57,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 64 transitions. [2021-11-21 00:45:57,367 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 64 transitions. Word has length 12 [2021-11-21 00:45:57,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:45:57,367 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 64 transitions. [2021-11-21 00:45:57,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-21 00:45:57,367 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 64 transitions. [2021-11-21 00:45:57,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-21 00:45:57,369 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:45:57,369 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:45:57,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 00:45:57,370 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:45:57,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:45:57,371 INFO L85 PathProgramCache]: Analyzing trace with hash -462529757, now seen corresponding path program 1 times [2021-11-21 00:45:57,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:45:57,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891489518] [2021-11-21 00:45:57,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:45:57,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:45:57,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:45:57,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:45:57,605 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:45:57,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891489518] [2021-11-21 00:45:57,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891489518] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:45:57,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520148534] [2021-11-21 00:45:57,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:45:57,606 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:45:57,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f26883-2d65-4ec5-91bd-5d5fb78292d2/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:45:57,611 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f26883-2d65-4ec5-91bd-5d5fb78292d2/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:45:57,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f26883-2d65-4ec5-91bd-5d5fb78292d2/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 00:45:57,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:45:57,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 47 conjunts are in the unsatisfiable core [2021-11-21 00:45:57,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:45:58,036 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 00:45:58,040 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 11 treesize of output 11 [2021-11-21 00:45:58,313 INFO L354 Elim1Store]: treesize reduction 185, result has 18.5 percent of original size [2021-11-21 00:45:58,314 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 3 case distinctions, treesize of input 77 treesize of output 49 [2021-11-21 00:45:58,911 INFO L354 Elim1Store]: treesize reduction 54, result has 33.3 percent of original size [2021-11-21 00:45:58,912 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 66 treesize of output 50 [2021-11-21 00:45:58,966 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:45:58,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:45:59,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5650 treesize of output 5586 [2021-11-21 00:46:00,736 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:46:00,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:00,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:00,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:46:00,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [520148534] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:46:00,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1567354836] [2021-11-21 00:46:00,896 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2021-11-21 00:46:00,897 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:46:00,901 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:46:00,906 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:46:00,907 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:46:01,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 00:46:01,346 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-21 00:46:02,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:02,094 INFO L354 Elim1Store]: treesize reduction 140, result has 30.3 percent of original size [2021-11-21 00:46:02,094 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 3 case distinctions, treesize of input 77 treesize of output 68 [2021-11-21 00:46:02,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:02,283 INFO L354 Elim1Store]: treesize reduction 143, result has 32.9 percent of original size [2021-11-21 00:46:02,284 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 3 case distinctions, treesize of input 81 treesize of output 70 [2021-11-21 00:46:02,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:02,418 INFO L354 Elim1Store]: treesize reduction 159, result has 20.9 percent of original size [2021-11-21 00:46:02,419 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 3 case distinctions, treesize of input 77 treesize of output 49 [2021-11-21 00:46:02,475 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 7 treesize of output 3 [2021-11-21 00:46:02,486 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 7 treesize of output 3 [2021-11-21 00:46:02,512 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 7 treesize of output 3 [2021-11-21 00:46:02,520 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 7 treesize of output 3 [2021-11-21 00:46:02,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:02,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:02,559 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-11-21 00:46:02,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:02,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:02,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-11-21 00:46:02,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:02,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:02,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-11-21 00:46:02,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:02,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:02,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-11-21 00:46:02,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 00:46:02,974 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 00:46:03,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 00:46:03,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 00:46:03,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:03,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:03,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:03,625 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-11-21 00:46:03,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:03,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:03,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:03,646 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-11-21 00:46:04,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:04,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:04,104 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-11-21 00:46:04,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:04,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:04,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-11-21 00:46:09,702 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_successful_malloc with input of size 33 for LOIs [2021-11-21 00:46:09,789 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_list_add with input of size 41 for LOIs [2021-11-21 00:46:10,323 INFO L197 IcfgInterpreter]: Interpreting procedure __ldv_list_add with input of size 49 for LOIs [2021-11-21 00:46:10,649 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:46:16,204 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:46:16,204 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:46:16,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 32 [2021-11-21 00:46:16,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726311069] [2021-11-21 00:46:16,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 00:46:16,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-21 00:46:16,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:46:16,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-21 00:46:16,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=2057, Unknown=0, NotChecked=0, Total=2256 [2021-11-21 00:46:16,208 INFO L87 Difference]: Start difference. First operand 52 states and 64 transitions. Second operand has 32 states, 20 states have (on average 1.65) internal successors, (33), 25 states have internal predecessors, (33), 9 states have call successors, (9), 4 states have call predecessors, (9), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-21 00:46:18,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:46:18,363 INFO L93 Difference]: Finished difference Result 207 states and 264 transitions. [2021-11-21 00:46:18,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-21 00:46:18,364 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 20 states have (on average 1.65) internal successors, (33), 25 states have internal predecessors, (33), 9 states have call successors, (9), 4 states have call predecessors, (9), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 19 [2021-11-21 00:46:18,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:46:18,367 INFO L225 Difference]: With dead ends: 207 [2021-11-21 00:46:18,367 INFO L226 Difference]: Without dead ends: 189 [2021-11-21 00:46:18,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1260 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=416, Invalid=4840, Unknown=0, NotChecked=0, Total=5256 [2021-11-21 00:46:18,371 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 239 mSDsluCounter, 778 mSDsCounter, 0 mSdLazyCounter, 1601 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 1780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 1601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 37 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:46:18,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [245 Valid, 815 Invalid, 1780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 1601 Invalid, 0 Unknown, 37 Unchecked, 1.3s Time] [2021-11-21 00:46:18,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-11-21 00:46:18,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 130. [2021-11-21 00:46:18,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 88 states have (on average 1.2954545454545454) internal successors, (114), 94 states have internal predecessors, (114), 22 states have call successors, (22), 14 states have call predecessors, (22), 17 states have return successors, (31), 23 states have call predecessors, (31), 22 states have call successors, (31) [2021-11-21 00:46:18,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 167 transitions. [2021-11-21 00:46:18,397 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 167 transitions. Word has length 19 [2021-11-21 00:46:18,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:46:18,397 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 167 transitions. [2021-11-21 00:46:18,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 20 states have (on average 1.65) internal successors, (33), 25 states have internal predecessors, (33), 9 states have call successors, (9), 4 states have call predecessors, (9), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-21 00:46:18,397 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 167 transitions. [2021-11-21 00:46:18,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-21 00:46:18,398 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:46:18,399 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:46:18,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f26883-2d65-4ec5-91bd-5d5fb78292d2/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-21 00:46:18,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f26883-2d65-4ec5-91bd-5d5fb78292d2/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:46:18,617 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:46:18,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:46:18,617 INFO L85 PathProgramCache]: Analyzing trace with hash 983498160, now seen corresponding path program 1 times [2021-11-21 00:46:18,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:46:18,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740100588] [2021-11-21 00:46:18,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:46:18,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:46:18,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:46:20,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:46:20,153 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:46:20,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740100588] [2021-11-21 00:46:20,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740100588] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:46:20,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278284367] [2021-11-21 00:46:20,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:46:20,154 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:46:20,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f26883-2d65-4ec5-91bd-5d5fb78292d2/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:46:20,154 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f26883-2d65-4ec5-91bd-5d5fb78292d2/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:46:20,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f26883-2d65-4ec5-91bd-5d5fb78292d2/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 00:46:20,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:46:20,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 79 conjunts are in the unsatisfiable core [2021-11-21 00:46:20,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:46:20,461 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 00:46:20,461 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 11 treesize of output 11 [2021-11-21 00:46:20,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-21 00:46:20,610 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 7 treesize of output 3 [2021-11-21 00:46:55,359 INFO L354 Elim1Store]: treesize reduction 317, result has 20.2 percent of original size [2021-11-21 00:46:55,359 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 252 treesize of output 225 [2021-11-21 00:46:55,518 INFO L354 Elim1Store]: treesize reduction 546, result has 9.5 percent of original size [2021-11-21 00:46:55,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 259 treesize of output 172 [2021-11-21 00:47:24,523 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:47:24,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:47:27,236 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v___ldv_list_add_~prev.offset_17 Int) (v___ldv_list_add_~next.offset_19 Int) (v___ldv_list_add_~new.offset_19 Int)) (= |c_~#mutexes~0.base| (select (select (let ((.cse0 (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |c_~#drvlist~0.base|) |c_~#drvlist~0.offset|))) (let ((.cse1 (store |c_#memory_$Pointer$.base| .cse2 (store (select |c_#memory_$Pointer$.base| .cse2) (+ v___ldv_list_add_~next.offset_19 4) |c_ULTIMATE.start_foo_~me~0#1.base|)))) (store .cse1 |c_ULTIMATE.start_foo_~me~0#1.base| (store (store (select .cse1 |c_ULTIMATE.start_foo_~me~0#1.base|) v___ldv_list_add_~new.offset_19 .cse2) (+ v___ldv_list_add_~new.offset_19 4) |c_~#drvlist~0.base|)))))) (store .cse0 |c_~#drvlist~0.base| (store (select .cse0 |c_~#drvlist~0.base|) v___ldv_list_add_~prev.offset_17 |c_ULTIMATE.start_foo_~me~0#1.base|))) |c_~#mutexes~0.base|) |c_~#mutexes~0.offset|))) (forall ((v___ldv_list_add_~prev.offset_17 Int) (v___ldv_list_add_~next.offset_19 Int) (v___ldv_list_add_~new.offset_19 Int)) (= (select (select (let ((.cse3 (let ((.cse4 (let ((.cse5 (select (select |c_#memory_$Pointer$.base| |c_~#drvlist~0.base|) |c_~#drvlist~0.offset|))) (store |c_#memory_$Pointer$.offset| .cse5 (store (select |c_#memory_$Pointer$.offset| .cse5) (+ v___ldv_list_add_~next.offset_19 4) v___ldv_list_add_~new.offset_19))))) (store .cse4 |c_ULTIMATE.start_foo_~me~0#1.base| (store (store (select .cse4 |c_ULTIMATE.start_foo_~me~0#1.base|) v___ldv_list_add_~new.offset_19 v___ldv_list_add_~next.offset_19) (+ v___ldv_list_add_~new.offset_19 4) v___ldv_list_add_~prev.offset_17))))) (store .cse3 |c_~#drvlist~0.base| (store (select .cse3 |c_~#drvlist~0.base|) v___ldv_list_add_~prev.offset_17 v___ldv_list_add_~new.offset_19))) |c_~#mutexes~0.base|) |c_~#mutexes~0.offset|) |c_~#mutexes~0.offset|))) is different from false [2021-11-21 00:47:27,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278284367] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:47:27,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1852515267] [2021-11-21 00:47:27,243 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2021-11-21 00:47:27,243 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:47:27,243 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:47:27,243 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:47:27,244 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:47:27,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-21 00:47:27,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 00:47:28,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:47:28,355 INFO L354 Elim1Store]: treesize reduction 159, result has 20.9 percent of original size [2021-11-21 00:47:28,355 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 3 case distinctions, treesize of input 77 treesize of output 49 [2021-11-21 00:47:28,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:47:28,487 INFO L354 Elim1Store]: treesize reduction 143, result has 32.9 percent of original size [2021-11-21 00:47:28,487 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 3 case distinctions, treesize of input 81 treesize of output 70 [2021-11-21 00:47:28,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:47:28,617 INFO L354 Elim1Store]: treesize reduction 140, result has 30.3 percent of original size [2021-11-21 00:47:28,617 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 3 case distinctions, treesize of input 77 treesize of output 68 [2021-11-21 00:47:28,675 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 7 treesize of output 3 [2021-11-21 00:47:28,683 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 7 treesize of output 3 [2021-11-21 00:47:28,714 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 7 treesize of output 3 [2021-11-21 00:47:28,725 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 7 treesize of output 3 [2021-11-21 00:47:28,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:47:28,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:47:28,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-11-21 00:47:28,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:47:28,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:47:28,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-11-21 00:47:28,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:47:28,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:47:28,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-11-21 00:47:28,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:47:29,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:47:29,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-11-21 00:47:29,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 00:47:29,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 00:47:29,332 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 00:47:29,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 00:47:29,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:47:29,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:47:29,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:47:29,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-11-21 00:47:29,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:47:29,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:47:29,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:47:29,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-11-21 00:47:30,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:47:30,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:47:30,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-11-21 00:47:30,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:47:30,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:47:30,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-11-21 00:47:35,380 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_successful_malloc with input of size 33 for LOIs [2021-11-21 00:47:35,484 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_is_in_set with input of size 45 for LOIs [2021-11-21 00:47:35,981 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_list_add with input of size 41 for LOIs [2021-11-21 00:47:36,576 INFO L197 IcfgInterpreter]: Interpreting procedure __ldv_list_add with input of size 49 for LOIs [2021-11-21 00:47:36,902 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:47:54,534 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:47:54,534 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-21 00:47:54,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 27 [2021-11-21 00:47:54,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308151010] [2021-11-21 00:47:54,534 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-21 00:47:54,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-21 00:47:54,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:47:54,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-21 00:47:54,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=2225, Unknown=22, NotChecked=96, Total=2550 [2021-11-21 00:47:54,536 INFO L87 Difference]: Start difference. First operand 130 states and 167 transitions. Second operand has 27 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 20 states have internal predecessors, (31), 8 states have call successors, (8), 6 states have call predecessors, (8), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-21 00:48:14,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:48:14,435 INFO L93 Difference]: Finished difference Result 196 states and 261 transitions. [2021-11-21 00:48:14,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-21 00:48:14,436 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 20 states have internal predecessors, (31), 8 states have call successors, (8), 6 states have call predecessors, (8), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) Word has length 25 [2021-11-21 00:48:14,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:48:14,440 INFO L225 Difference]: With dead ends: 196 [2021-11-21 00:48:14,440 INFO L226 Difference]: Without dead ends: 152 [2021-11-21 00:48:14,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1166 ImplicationChecksByTransitivity, 74.2s TimeCoverageRelationStatistics Valid=356, Invalid=3778, Unknown=30, NotChecked=126, Total=4290 [2021-11-21 00:48:14,444 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 20 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 166 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-21 00:48:14,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 362 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 391 Invalid, 0 Unknown, 166 Unchecked, 0.8s Time] [2021-11-21 00:48:14,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-11-21 00:48:14,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 138. [2021-11-21 00:48:14,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 94 states have (on average 1.3085106382978724) internal successors, (123), 101 states have internal predecessors, (123), 23 states have call successors, (23), 15 states have call predecessors, (23), 18 states have return successors, (36), 23 states have call predecessors, (36), 23 states have call successors, (36) [2021-11-21 00:48:14,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 182 transitions. [2021-11-21 00:48:14,476 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 182 transitions. Word has length 25 [2021-11-21 00:48:14,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:48:14,476 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 182 transitions. [2021-11-21 00:48:14,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 20 states have internal predecessors, (31), 8 states have call successors, (8), 6 states have call predecessors, (8), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-21 00:48:14,477 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 182 transitions. [2021-11-21 00:48:14,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-21 00:48:14,478 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:48:14,478 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:48:14,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f26883-2d65-4ec5-91bd-5d5fb78292d2/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-21 00:48:14,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f26883-2d65-4ec5-91bd-5d5fb78292d2/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:48:14,684 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:48:14,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:48:14,684 INFO L85 PathProgramCache]: Analyzing trace with hash 2084555905, now seen corresponding path program 1 times [2021-11-21 00:48:14,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:48:14,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6298030] [2021-11-21 00:48:14,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:48:14,685 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:48:14,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:48:16,227 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:48:16,228 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:48:16,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6298030] [2021-11-21 00:48:16,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6298030] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:48:16,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697280825] [2021-11-21 00:48:16,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:48:16,228 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:48:16,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f26883-2d65-4ec5-91bd-5d5fb78292d2/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:48:16,229 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f26883-2d65-4ec5-91bd-5d5fb78292d2/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:48:16,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f26883-2d65-4ec5-91bd-5d5fb78292d2/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-21 00:48:16,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:48:16,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 79 conjunts are in the unsatisfiable core [2021-11-21 00:48:16,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:48:16,561 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 00:48:16,561 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 11 treesize of output 11 [2021-11-21 00:48:16,722 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 7 treesize of output 3 [2021-11-21 00:48:16,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-21 00:48:51,484 INFO L354 Elim1Store]: treesize reduction 317, result has 20.2 percent of original size [2021-11-21 00:48:51,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 252 treesize of output 225 [2021-11-21 00:48:51,616 INFO L354 Elim1Store]: treesize reduction 546, result has 9.5 percent of original size [2021-11-21 00:48:51,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 259 treesize of output 172 [2021-11-21 00:49:28,467 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 00:49:28,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:49:31,250 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v___ldv_list_add_~next.offset_25 Int) (v___ldv_list_add_~new.offset_25 Int) (v___ldv_list_add_~prev.offset_23 Int)) (= |c_~#mutexes~0.offset| (select (select (let ((.cse0 (let ((.cse1 (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |c_~#drvlist~0.base|) |c_~#drvlist~0.offset|))) (store |c_#memory_$Pointer$.offset| .cse2 (store (select |c_#memory_$Pointer$.offset| .cse2) (+ v___ldv_list_add_~next.offset_25 4) v___ldv_list_add_~new.offset_25))))) (store .cse1 |c_ULTIMATE.start_foo_~me~0#1.base| (store (store (select .cse1 |c_ULTIMATE.start_foo_~me~0#1.base|) v___ldv_list_add_~new.offset_25 v___ldv_list_add_~next.offset_25) (+ v___ldv_list_add_~new.offset_25 4) v___ldv_list_add_~prev.offset_23))))) (store .cse0 |c_~#drvlist~0.base| (store (select .cse0 |c_~#drvlist~0.base|) v___ldv_list_add_~prev.offset_23 v___ldv_list_add_~new.offset_25))) |c_~#mutexes~0.base|) |c_~#mutexes~0.offset|))) (forall ((v___ldv_list_add_~next.offset_25 Int) (v___ldv_list_add_~new.offset_25 Int) (v___ldv_list_add_~prev.offset_23 Int)) (= |c_~#mutexes~0.base| (select (select (let ((.cse3 (let ((.cse5 (select (select |c_#memory_$Pointer$.base| |c_~#drvlist~0.base|) |c_~#drvlist~0.offset|))) (let ((.cse4 (store |c_#memory_$Pointer$.base| .cse5 (store (select |c_#memory_$Pointer$.base| .cse5) (+ v___ldv_list_add_~next.offset_25 4) |c_ULTIMATE.start_foo_~me~0#1.base|)))) (store .cse4 |c_ULTIMATE.start_foo_~me~0#1.base| (store (store (select .cse4 |c_ULTIMATE.start_foo_~me~0#1.base|) v___ldv_list_add_~new.offset_25 .cse5) (+ v___ldv_list_add_~new.offset_25 4) |c_~#drvlist~0.base|)))))) (store .cse3 |c_~#drvlist~0.base| (store (select .cse3 |c_~#drvlist~0.base|) v___ldv_list_add_~prev.offset_23 |c_ULTIMATE.start_foo_~me~0#1.base|))) |c_~#mutexes~0.base|) |c_~#mutexes~0.offset|)))) is different from false [2021-11-21 00:49:31,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697280825] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:49:31,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1969431866] [2021-11-21 00:49:31,258 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2021-11-21 00:49:31,258 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:49:31,258 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:49:31,258 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:49:31,259 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:49:31,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-21 00:49:31,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 00:49:32,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:49:32,240 INFO L354 Elim1Store]: treesize reduction 159, result has 20.9 percent of original size [2021-11-21 00:49:32,241 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 3 case distinctions, treesize of input 77 treesize of output 49 [2021-11-21 00:49:32,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:49:32,370 INFO L354 Elim1Store]: treesize reduction 143, result has 32.9 percent of original size [2021-11-21 00:49:32,370 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 3 case distinctions, treesize of input 81 treesize of output 70 [2021-11-21 00:49:32,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:49:32,509 INFO L354 Elim1Store]: treesize reduction 140, result has 30.3 percent of original size [2021-11-21 00:49:32,510 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 3 case distinctions, treesize of input 77 treesize of output 68 [2021-11-21 00:49:32,589 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 7 treesize of output 3 [2021-11-21 00:49:32,595 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 7 treesize of output 3 [2021-11-21 00:49:32,621 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 7 treesize of output 3 [2021-11-21 00:49:32,630 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 7 treesize of output 3 [2021-11-21 00:49:32,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:49:32,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:49:32,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-11-21 00:49:32,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:49:32,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:49:32,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-11-21 00:49:32,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:49:32,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:49:32,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-11-21 00:49:32,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:49:32,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:49:32,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-11-21 00:49:33,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 00:49:33,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 00:49:33,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 00:49:33,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 00:49:33,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:49:33,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:49:33,754 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-11-21 00:49:33,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:49:33,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:49:33,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-11-21 00:49:34,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:49:34,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:49:34,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-11-21 00:49:34,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:49:34,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:49:34,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-11-21 00:49:34,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 00:49:34,619 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 00:49:34,724 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 00:49:34,733 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 00:49:40,024 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_successful_malloc with input of size 33 for LOIs [2021-11-21 00:49:40,130 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_is_in_set with input of size 45 for LOIs [2021-11-21 00:49:41,144 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_list_add with input of size 41 for LOIs [2021-11-21 00:49:41,882 INFO L197 IcfgInterpreter]: Interpreting procedure __ldv_list_add with input of size 49 for LOIs [2021-11-21 00:49:42,243 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:50:00,920 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:50:00,920 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-21 00:50:00,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 29 [2021-11-21 00:50:00,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241820457] [2021-11-21 00:50:00,921 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-21 00:50:00,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-21 00:50:00,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:50:00,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-21 00:50:00,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=2335, Unknown=22, NotChecked=98, Total=2652 [2021-11-21 00:50:00,924 INFO L87 Difference]: Start difference. First operand 138 states and 182 transitions. Second operand has 29 states, 20 states have (on average 1.75) internal successors, (35), 22 states have internal predecessors, (35), 8 states have call successors, (8), 6 states have call predecessors, (8), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-21 00:50:21,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:50:21,217 INFO L93 Difference]: Finished difference Result 211 states and 286 transitions. [2021-11-21 00:50:21,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-21 00:50:21,218 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 20 states have (on average 1.75) internal successors, (35), 22 states have internal predecessors, (35), 8 states have call successors, (8), 6 states have call predecessors, (8), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) Word has length 27 [2021-11-21 00:50:21,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:50:21,220 INFO L225 Difference]: With dead ends: 211 [2021-11-21 00:50:21,220 INFO L226 Difference]: Without dead ends: 163 [2021-11-21 00:50:21,223 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1355 ImplicationChecksByTransitivity, 75.8s TimeCoverageRelationStatistics Valid=383, Invalid=4283, Unknown=30, NotChecked=134, Total=4830 [2021-11-21 00:50:21,224 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 50 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 121 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-21 00:50:21,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 337 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 476 Invalid, 0 Unknown, 121 Unchecked, 0.8s Time] [2021-11-21 00:50:21,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-11-21 00:50:21,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 136. [2021-11-21 00:50:21,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 92 states have (on average 1.2934782608695652) internal successors, (119), 99 states have internal predecessors, (119), 23 states have call successors, (23), 15 states have call predecessors, (23), 18 states have return successors, (32), 23 states have call predecessors, (32), 23 states have call successors, (32) [2021-11-21 00:50:21,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 174 transitions. [2021-11-21 00:50:21,248 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 174 transitions. Word has length 27 [2021-11-21 00:50:21,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:50:21,248 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 174 transitions. [2021-11-21 00:50:21,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 20 states have (on average 1.75) internal successors, (35), 22 states have internal predecessors, (35), 8 states have call successors, (8), 6 states have call predecessors, (8), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-21 00:50:21,249 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 174 transitions. [2021-11-21 00:50:21,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-21 00:50:21,251 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:50:21,251 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:50:21,295 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f26883-2d65-4ec5-91bd-5d5fb78292d2/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-21 00:50:21,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f26883-2d65-4ec5-91bd-5d5fb78292d2/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:50:21,480 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:50:21,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:50:21,480 INFO L85 PathProgramCache]: Analyzing trace with hash -487816988, now seen corresponding path program 2 times [2021-11-21 00:50:21,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:50:21,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452313969] [2021-11-21 00:50:21,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:50:21,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:50:21,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:50:24,441 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-21 00:50:24,441 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:50:24,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452313969] [2021-11-21 00:50:24,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452313969] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:50:24,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258103856] [2021-11-21 00:50:24,442 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 00:50:24,442 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:50:24,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f26883-2d65-4ec5-91bd-5d5fb78292d2/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:50:24,442 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f26883-2d65-4ec5-91bd-5d5fb78292d2/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:50:24,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f26883-2d65-4ec5-91bd-5d5fb78292d2/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-21 00:50:24,545 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-21 00:50:24,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 00:50:24,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 130 conjunts are in the unsatisfiable core [2021-11-21 00:50:24,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:50:24,845 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 00:50:24,845 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-21 00:50:25,016 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-21 00:50:25,029 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 7 treesize of output 3 [2021-11-21 00:50:48,027 INFO L354 Elim1Store]: treesize reduction 304, result has 9.8 percent of original size [2021-11-21 00:50:48,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 257 treesize of output 142 [2021-11-21 00:50:48,147 INFO L354 Elim1Store]: treesize reduction 429, result has 21.3 percent of original size [2021-11-21 00:50:48,147 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 234 treesize of output 195 [2021-11-21 00:50:48,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-21 00:50:49,127 INFO L354 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2021-11-21 00:50:49,128 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2021-11-21 00:50:49,606 INFO L354 Elim1Store]: treesize reduction 144, result has 0.7 percent of original size [2021-11-21 00:50:49,607 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 9 case distinctions, treesize of input 245 treesize of output 132 [2021-11-21 00:50:49,686 INFO L354 Elim1Store]: treesize reduction 40, result has 55.1 percent of original size [2021-11-21 00:50:49,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 8 case distinctions, treesize of input 101 treesize of output 102 [2021-11-21 00:51:57,636 INFO L354 Elim1Store]: treesize reduction 1002, result has 20.3 percent of original size [2021-11-21 00:51:57,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 17 case distinctions, treesize of input 483 treesize of output 539 [2021-11-21 00:51:58,098 INFO L354 Elim1Store]: treesize reduction 916, result has 13.2 percent of original size [2021-11-21 00:51:58,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 17 case distinctions, treesize of input 701 treesize of output 515