./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-sets/test_mutex_unbounded-2.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_9cd934b8-bdb7-42c1-8d95-4636830fc10d/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd934b8-bdb7-42c1-8d95-4636830fc10d/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_9cd934b8-bdb7-42c1-8d95-4636830fc10d/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd934b8-bdb7-42c1-8d95-4636830fc10d/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-sets/test_mutex_unbounded-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd934b8-bdb7-42c1-8d95-4636830fc10d/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_9cd934b8-bdb7-42c1-8d95-4636830fc10d/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 52ed361cdf08860b8c7c7d564ef95393de2d3a38663ac135cf0da9ded1f39b3f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:21:50,823 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:21:50,827 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:21:50,892 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:21:50,893 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:21:50,898 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:21:50,900 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:21:50,905 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:21:50,908 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:21:50,916 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:21:50,917 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:21:50,919 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:21:50,920 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:21:50,923 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:21:50,926 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:21:50,932 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:21:50,934 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:21:50,935 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:21:50,938 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:21:50,947 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:21:50,950 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:21:50,952 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:21:50,956 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:21:50,957 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:21:50,968 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:21:50,968 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:21:50,969 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:21:50,970 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:21:50,971 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:21:50,972 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:21:50,973 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:21:50,974 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:21:50,975 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:21:50,976 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:21:50,977 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:21:50,978 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:21:50,979 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:21:50,979 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:21:50,979 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:21:50,980 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:21:50,981 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:21:50,982 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd934b8-bdb7-42c1-8d95-4636830fc10d/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-21 01:21:51,030 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:21:51,031 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:21:51,032 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:21:51,032 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:21:51,033 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:21:51,040 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:21:51,041 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:21:51,041 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:21:51,041 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:21:51,042 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:21:51,043 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:21:51,043 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:21:51,044 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:21:51,044 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:21:51,044 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:21:51,045 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:21:51,045 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:21:51,045 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:21:51,046 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:21:51,046 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:21:51,047 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:21:51,047 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:21:51,047 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:21:51,048 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:21:51,048 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:21:51,048 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:21:51,050 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:21:51,050 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:21:51,051 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:21:51,051 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:21:51,051 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:21:51,052 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:21:51,052 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:21:51,053 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:21:51,053 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:21:51,053 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:21:51,053 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:21:51,054 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:21:51,054 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:21:51,054 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:21:51,055 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:21:51,055 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_9cd934b8-bdb7-42c1-8d95-4636830fc10d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd934b8-bdb7-42c1-8d95-4636830fc10d/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52ed361cdf08860b8c7c7d564ef95393de2d3a38663ac135cf0da9ded1f39b3f [2021-11-21 01:21:51,454 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:21:51,485 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:21:51,488 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:21:51,490 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:21:51,491 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:21:51,492 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd934b8-bdb7-42c1-8d95-4636830fc10d/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-sets/test_mutex_unbounded-2.i [2021-11-21 01:21:51,571 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd934b8-bdb7-42c1-8d95-4636830fc10d/bin/utaipan-TEXQjIfE4P/data/5c8aff4d0/2de7a3eb30074e9aad183ceadd43b1c9/FLAGa0956520d [2021-11-21 01:21:52,255 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:21:52,256 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd934b8-bdb7-42c1-8d95-4636830fc10d/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-2.i [2021-11-21 01:21:52,291 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd934b8-bdb7-42c1-8d95-4636830fc10d/bin/utaipan-TEXQjIfE4P/data/5c8aff4d0/2de7a3eb30074e9aad183ceadd43b1c9/FLAGa0956520d [2021-11-21 01:21:52,529 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd934b8-bdb7-42c1-8d95-4636830fc10d/bin/utaipan-TEXQjIfE4P/data/5c8aff4d0/2de7a3eb30074e9aad183ceadd43b1c9 [2021-11-21 01:21:52,532 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:21:52,534 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:21:52,546 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:21:52,547 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:21:52,551 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:21:52,552 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:21:52" (1/1) ... [2021-11-21 01:21:52,553 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e415ac3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:21:52, skipping insertion in model container [2021-11-21 01:21:52,554 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:21:52" (1/1) ... [2021-11-21 01:21:52,563 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:21:52,614 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:21:53,038 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_9cd934b8-bdb7-42c1-8d95-4636830fc10d/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-2.i[26271,26284] [2021-11-21 01:21:53,048 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_9cd934b8-bdb7-42c1-8d95-4636830fc10d/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-2.i[26396,26409] [2021-11-21 01:21:53,050 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_9cd934b8-bdb7-42c1-8d95-4636830fc10d/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-2.i[26511,26524] [2021-11-21 01:21:53,074 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:21:53,089 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:21:53,148 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_9cd934b8-bdb7-42c1-8d95-4636830fc10d/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-2.i[26271,26284] [2021-11-21 01:21:53,155 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_9cd934b8-bdb7-42c1-8d95-4636830fc10d/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-2.i[26396,26409] [2021-11-21 01:21:53,156 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_9cd934b8-bdb7-42c1-8d95-4636830fc10d/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-2.i[26511,26524] [2021-11-21 01:21:53,179 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:21:53,221 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:21:53,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:21:53 WrapperNode [2021-11-21 01:21:53,221 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:21:53,223 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:21:53,223 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:21:53,223 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:21:53,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:21:53" (1/1) ... [2021-11-21 01:21:53,263 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:21:53" (1/1) ... [2021-11-21 01:21:53,298 INFO L137 Inliner]: procedures = 142, calls = 63, calls flagged for inlining = 14, calls inlined = 13, statements flattened = 162 [2021-11-21 01:21:53,299 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:21:53,299 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:21:53,300 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:21:53,300 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:21:53,307 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:21:53" (1/1) ... [2021-11-21 01:21:53,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:21:53" (1/1) ... [2021-11-21 01:21:53,314 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:21:53" (1/1) ... [2021-11-21 01:21:53,314 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:21:53" (1/1) ... [2021-11-21 01:21:53,329 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:21:53" (1/1) ... [2021-11-21 01:21:53,335 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:21:53" (1/1) ... [2021-11-21 01:21:53,338 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:21:53" (1/1) ... [2021-11-21 01:21:53,344 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:21:53,345 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:21:53,346 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:21:53,346 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:21:53,347 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:21:53" (1/1) ... [2021-11-21 01:21:53,364 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:21:53,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd934b8-bdb7-42c1-8d95-4636830fc10d/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:21:53,390 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd934b8-bdb7-42c1-8d95-4636830fc10d/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:21:53,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd934b8-bdb7-42c1-8d95-4636830fc10d/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:21:53,428 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2021-11-21 01:21:53,428 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2021-11-21 01:21:53,428 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2021-11-21 01:21:53,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2021-11-21 01:21:53,428 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:21:53,429 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:21:53,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 01:21:53,429 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2021-11-21 01:21:53,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2021-11-21 01:21:53,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 01:21:53,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:21:53,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 01:21:53,430 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2021-11-21 01:21:53,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2021-11-21 01:21:53,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:21:53,430 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2021-11-21 01:21:53,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2021-11-21 01:21:53,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:21:53,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:21:53,577 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:21:53,579 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:21:53,927 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:21:54,025 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:21:54,025 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-21 01:21:54,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:21:54 BoogieIcfgContainer [2021-11-21 01:21:54,030 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:21:54,033 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:21:54,034 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:21:54,038 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:21:54,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:21:52" (1/3) ... [2021-11-21 01:21:54,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6de514e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:21:54, skipping insertion in model container [2021-11-21 01:21:54,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:21:53" (2/3) ... [2021-11-21 01:21:54,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6de514e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:21:54, skipping insertion in model container [2021-11-21 01:21:54,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:21:54" (3/3) ... [2021-11-21 01:21:54,044 INFO L111 eAbstractionObserver]: Analyzing ICFG test_mutex_unbounded-2.i [2021-11-21 01:21:54,053 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:21:54,053 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-21 01:21:54,108 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:21:54,116 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 01:21:54,116 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-21 01:21:54,135 INFO L276 IsEmpty]: Start isEmpty. Operand has 54 states, 35 states have (on average 1.4) internal successors, (49), 39 states have internal predecessors, (49), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-21 01:21:54,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-21 01:21:54,140 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:21:54,141 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-21 01:21:54,141 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 01:21:54,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:21:54,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1775127545, now seen corresponding path program 1 times [2021-11-21 01:21:54,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:21:54,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125441929] [2021-11-21 01:21:54,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:21:54,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:21:54,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:21:54,421 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 01:21:54,422 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:21:54,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125441929] [2021-11-21 01:21:54,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125441929] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:21:54,423 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:21:54,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:21:54,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631049434] [2021-11-21 01:21:54,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:21:54,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:21:54,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:21:54,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:21:54,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:21:54,465 INFO L87 Difference]: Start difference. First operand has 54 states, 35 states have (on average 1.4) internal successors, (49), 39 states have internal predecessors, (49), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) 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 01:21:54,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:21:54,683 INFO L93 Difference]: Finished difference Result 145 states and 189 transitions. [2021-11-21 01:21:54,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:21:54,686 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 01:21:54,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:21:54,697 INFO L225 Difference]: With dead ends: 145 [2021-11-21 01:21:54,697 INFO L226 Difference]: Without dead ends: 92 [2021-11-21 01:21:54,701 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 01:21:54,705 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 47 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:21:54,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 149 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 01:21:54,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-11-21 01:21:54,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 72. [2021-11-21 01:21:54,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 50 states have (on average 1.36) internal successors, (68), 54 states have internal predecessors, (68), 13 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-21 01:21:54,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 94 transitions. [2021-11-21 01:21:54,762 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 94 transitions. Word has length 6 [2021-11-21 01:21:54,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:21:54,762 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 94 transitions. [2021-11-21 01:21:54,763 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 01:21:54,763 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 94 transitions. [2021-11-21 01:21:54,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-21 01:21:54,765 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:21:54,765 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:21:54,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:21:54,766 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 01:21:54,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:21:54,767 INFO L85 PathProgramCache]: Analyzing trace with hash -2012936512, now seen corresponding path program 1 times [2021-11-21 01:21:54,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:21:54,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531626543] [2021-11-21 01:21:54,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:21:54,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:21:54,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:21:54,847 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 01:21:54,848 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:21:54,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531626543] [2021-11-21 01:21:54,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531626543] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:21:54,849 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:21:54,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:21:54,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156825867] [2021-11-21 01:21:54,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:21:54,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:21:54,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:21:54,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:21:54,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:21:54,853 INFO L87 Difference]: Start difference. First operand 72 states and 94 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 01:21:54,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:21:54,940 INFO L93 Difference]: Finished difference Result 82 states and 109 transitions. [2021-11-21 01:21:54,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:21:54,942 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 01:21:54,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:21:54,945 INFO L225 Difference]: With dead ends: 82 [2021-11-21 01:21:54,945 INFO L226 Difference]: Without dead ends: 80 [2021-11-21 01:21:54,946 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 01:21:54,948 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 0 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 147 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 01:21:54,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 147 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:21:54,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-11-21 01:21:54,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-11-21 01:21:54,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 56 states have (on average 1.3214285714285714) internal successors, (74), 60 states have internal predecessors, (74), 13 states have call successors, (13), 6 states have call predecessors, (13), 8 states have return successors, (19), 14 states have call predecessors, (19), 13 states have call successors, (19) [2021-11-21 01:21:54,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 106 transitions. [2021-11-21 01:21:54,971 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 106 transitions. Word has length 11 [2021-11-21 01:21:54,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:21:54,972 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 106 transitions. [2021-11-21 01:21:54,973 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 01:21:54,973 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 106 transitions. [2021-11-21 01:21:54,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-21 01:21:54,974 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:21:54,975 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:21:54,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 01:21:54,975 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 01:21:54,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:21:54,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1855141470, now seen corresponding path program 1 times [2021-11-21 01:21:54,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:21:54,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997115369] [2021-11-21 01:21:54,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:21:54,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:21:55,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:21:55,072 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 01:21:55,072 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:21:55,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997115369] [2021-11-21 01:21:55,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997115369] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:21:55,073 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:21:55,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:21:55,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370808924] [2021-11-21 01:21:55,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:21:55,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:21:55,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:21:55,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:21:55,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:21:55,077 INFO L87 Difference]: Start difference. First operand 80 states and 106 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 01:21:55,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:21:55,245 INFO L93 Difference]: Finished difference Result 139 states and 178 transitions. [2021-11-21 01:21:55,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:21:55,246 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 01:21:55,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:21:55,248 INFO L225 Difference]: With dead ends: 139 [2021-11-21 01:21:55,248 INFO L226 Difference]: Without dead ends: 65 [2021-11-21 01:21:55,249 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 01:21:55,251 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 11 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:21:55,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 139 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:21:55,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-11-21 01:21:55,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 60. [2021-11-21 01:21:55,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 43 states have internal predecessors, (49), 11 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) [2021-11-21 01:21:55,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 74 transitions. [2021-11-21 01:21:55,264 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 74 transitions. Word has length 12 [2021-11-21 01:21:55,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:21:55,265 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 74 transitions. [2021-11-21 01:21:55,265 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 01:21:55,265 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 74 transitions. [2021-11-21 01:21:55,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-21 01:21:55,266 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:21:55,267 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 01:21:55,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 01:21:55,267 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 01:21:55,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:21:55,268 INFO L85 PathProgramCache]: Analyzing trace with hash -598092077, now seen corresponding path program 1 times [2021-11-21 01:21:55,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:21:55,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584138832] [2021-11-21 01:21:55,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:21:55,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:21:55,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:21:55,534 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 01:21:55,534 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:21:55,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584138832] [2021-11-21 01:21:55,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584138832] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:21:55,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729247255] [2021-11-21 01:21:55,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:21:55,535 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:21:55,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd934b8-bdb7-42c1-8d95-4636830fc10d/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:21:55,550 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd934b8-bdb7-42c1-8d95-4636830fc10d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:21:55,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd934b8-bdb7-42c1-8d95-4636830fc10d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 01:21:55,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:21:55,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 47 conjunts are in the unsatisfiable core [2021-11-21 01:21:55,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:21:56,031 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 01:21:56,032 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 01:21:56,348 INFO L354 Elim1Store]: treesize reduction 185, result has 18.5 percent of original size [2021-11-21 01:21:56,349 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 01:21:57,071 INFO L354 Elim1Store]: treesize reduction 54, result has 33.3 percent of original size [2021-11-21 01:21:57,077 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 01:21:57,149 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 01:21:57,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:21:57,616 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 722 treesize of output 714 [2021-11-21 01:21:57,984 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:21:57,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:57,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:58,134 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 01:21:58,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729247255] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:21:58,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2134069296] [2021-11-21 01:21:58,162 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2021-11-21 01:21:58,163 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:21:58,168 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:21:58,174 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:21:58,174 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:21:58,730 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 01:21:58,747 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 01:21:59,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:59,650 INFO L354 Elim1Store]: treesize reduction 140, result has 30.3 percent of original size [2021-11-21 01:21:59,651 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 01:21:59,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:59,823 INFO L354 Elim1Store]: treesize reduction 143, result has 32.9 percent of original size [2021-11-21 01:21:59,823 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 01:21:59,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:59,940 INFO L354 Elim1Store]: treesize reduction 159, result has 20.9 percent of original size [2021-11-21 01:21:59,941 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 01:22:00,009 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 01:22:00,015 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 01:22:00,045 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 01:22:00,054 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 01:22:00,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:00,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:00,095 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 01:22:00,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:00,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:00,135 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 01:22:00,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:00,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:00,349 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 01:22:00,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:00,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:00,388 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 01:22:00,601 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 01:22:00,627 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 01:22:00,748 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 01:22:00,768 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 01:22:01,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:01,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:01,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:01,403 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 01:22:01,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:01,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:01,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:01,426 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 01:22:01,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:01,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:01,996 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 01:22:02,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:02,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:02,028 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 01:22:08,155 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_successful_malloc with input of size 33 for LOIs [2021-11-21 01:22:08,266 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_list_add with input of size 41 for LOIs [2021-11-21 01:22:08,889 INFO L197 IcfgInterpreter]: Interpreting procedure __ldv_list_add with input of size 49 for LOIs [2021-11-21 01:22:09,235 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:22:15,294 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:22:15,294 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:22:15,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 32 [2021-11-21 01:22:15,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066751101] [2021-11-21 01:22:15,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 01:22:15,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-21 01:22:15,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:22:15,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-21 01:22:15,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=2057, Unknown=0, NotChecked=0, Total=2256 [2021-11-21 01:22:15,299 INFO L87 Difference]: Start difference. First operand 60 states and 74 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 01:22:17,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:22:17,679 INFO L93 Difference]: Finished difference Result 200 states and 250 transitions. [2021-11-21 01:22:17,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-21 01:22:17,680 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 01:22:17,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:22:17,685 INFO L225 Difference]: With dead ends: 200 [2021-11-21 01:22:17,689 INFO L226 Difference]: Without dead ends: 176 [2021-11-21 01:22:17,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1260 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=416, Invalid=4840, Unknown=0, NotChecked=0, Total=5256 [2021-11-21 01:22:17,694 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 146 mSDsluCounter, 1025 mSDsCounter, 0 mSdLazyCounter, 1652 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 1043 SdHoareTripleChecker+Invalid, 1812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:22:17,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 1043 Invalid, 1812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1652 Invalid, 0 Unknown, 39 Unchecked, 1.4s Time] [2021-11-21 01:22:17,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-11-21 01:22:17,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 137. [2021-11-21 01:22:17,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 90 states have (on average 1.2666666666666666) internal successors, (114), 96 states have internal predecessors, (114), 25 states have call successors, (25), 16 states have call predecessors, (25), 19 states have return successors, (33), 26 states have call predecessors, (33), 25 states have call successors, (33) [2021-11-21 01:22:17,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 172 transitions. [2021-11-21 01:22:17,723 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 172 transitions. Word has length 19 [2021-11-21 01:22:17,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:22:17,723 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 172 transitions. [2021-11-21 01:22:17,724 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 01:22:17,724 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 172 transitions. [2021-11-21 01:22:17,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-21 01:22:17,725 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:22:17,725 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 01:22:17,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd934b8-bdb7-42c1-8d95-4636830fc10d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-21 01:22:17,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd934b8-bdb7-42c1-8d95-4636830fc10d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:22:17,950 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 01:22:17,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:22:17,951 INFO L85 PathProgramCache]: Analyzing trace with hash 839979050, now seen corresponding path program 1 times [2021-11-21 01:22:17,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:22:17,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365891452] [2021-11-21 01:22:17,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:22:17,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:22:18,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:22:19,807 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 01:22:19,807 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:22:19,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365891452] [2021-11-21 01:22:19,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365891452] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:22:19,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758082038] [2021-11-21 01:22:19,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:22:19,808 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:22:19,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd934b8-bdb7-42c1-8d95-4636830fc10d/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:22:19,813 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd934b8-bdb7-42c1-8d95-4636830fc10d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:22:19,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd934b8-bdb7-42c1-8d95-4636830fc10d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 01:22:19,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:22:19,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 79 conjunts are in the unsatisfiable core [2021-11-21 01:22:19,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:22:20,209 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 01:22:20,210 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 01:22:20,366 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 01:22:20,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 01:22:55,296 INFO L354 Elim1Store]: treesize reduction 317, result has 20.2 percent of original size [2021-11-21 01:22:55,297 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 01:22:55,501 INFO L354 Elim1Store]: treesize reduction 546, result has 9.5 percent of original size [2021-11-21 01:22:55,502 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 01:23:29,278 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 01:23:29,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:23:50,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758082038] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:23:50,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [81663225] [2021-11-21 01:23:50,067 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2021-11-21 01:23:50,067 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:23:50,068 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:23:50,068 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:23:50,069 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:23:50,507 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 01:23:50,518 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 01:23:51,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:23:51,268 INFO L354 Elim1Store]: treesize reduction 159, result has 20.9 percent of original size [2021-11-21 01:23:51,269 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 01:23:51,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:23:51,425 INFO L354 Elim1Store]: treesize reduction 143, result has 32.9 percent of original size [2021-11-21 01:23:51,426 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 01:23:51,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:23:51,569 INFO L354 Elim1Store]: treesize reduction 140, result has 30.3 percent of original size [2021-11-21 01:23:51,569 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 01:23:51,652 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 01:23:51,661 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 01:23:51,691 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 01:23:51,707 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 01:23:51,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:23:51,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:23:51,772 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 01:23:51,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:23:51,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:23:51,800 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 01:23:52,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:23:52,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:23:52,024 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 01:23:52,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:23:52,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:23:52,040 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 01:23:52,261 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 01:23:52,291 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 01:23:52,372 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 01:23:52,379 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 01:23:52,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:23:52,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:23:52,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:23:52,937 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 01:23:52,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:23:52,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:23:52,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:23:52,961 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 01:23:53,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:23:53,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:23:53,586 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 01:23:53,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:23:53,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:23:53,610 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 01:23:59,330 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_successful_malloc with input of size 33 for LOIs [2021-11-21 01:23:59,445 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_is_in_set with input of size 45 for LOIs [2021-11-21 01:24:00,029 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_list_add with input of size 41 for LOIs [2021-11-21 01:24:00,743 INFO L197 IcfgInterpreter]: Interpreting procedure __ldv_list_add with input of size 49 for LOIs [2021-11-21 01:24:01,161 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:24:19,181 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:24:19,181 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-21 01:24:19,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 27 [2021-11-21 01:24:19,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066983811] [2021-11-21 01:24:19,181 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-21 01:24:19,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-21 01:24:19,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:24:19,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-21 01:24:19,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=2314, Unknown=26, NotChecked=0, Total=2550 [2021-11-21 01:24:19,184 INFO L87 Difference]: Start difference. First operand 137 states and 172 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 01:24:43,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:24:43,390 INFO L93 Difference]: Finished difference Result 210 states and 270 transitions. [2021-11-21 01:24:43,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-21 01:24:43,392 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 01:24:43,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:24:43,394 INFO L225 Difference]: With dead ends: 210 [2021-11-21 01:24:43,394 INFO L226 Difference]: Without dead ends: 158 [2021-11-21 01:24:43,400 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1234 ImplicationChecksByTransitivity, 96.9s TimeCoverageRelationStatistics Valid=360, Invalid=3894, Unknown=36, NotChecked=0, Total=4290 [2021-11-21 01:24:43,401 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 17 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 227 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-21 01:24:43,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 539 Invalid, 758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 481 Invalid, 0 Unknown, 227 Unchecked, 0.9s Time] [2021-11-21 01:24:43,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-11-21 01:24:43,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 139. [2021-11-21 01:24:43,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 93 states have (on average 1.2795698924731183) internal successors, (119), 99 states have internal predecessors, (119), 24 states have call successors, (24), 16 states have call predecessors, (24), 19 states have return successors, (36), 25 states have call predecessors, (36), 24 states have call successors, (36) [2021-11-21 01:24:43,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 179 transitions. [2021-11-21 01:24:43,444 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 179 transitions. Word has length 25 [2021-11-21 01:24:43,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:24:43,445 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 179 transitions. [2021-11-21 01:24:43,445 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 01:24:43,446 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 179 transitions. [2021-11-21 01:24:43,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-21 01:24:43,447 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:24:43,447 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 01:24:43,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd934b8-bdb7-42c1-8d95-4636830fc10d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-21 01:24:43,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd934b8-bdb7-42c1-8d95-4636830fc10d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:24:43,652 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 01:24:43,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:24:43,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1791167712, now seen corresponding path program 1 times [2021-11-21 01:24:43,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:24:43,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342427513] [2021-11-21 01:24:43,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:24:43,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:24:43,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:24:45,075 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 01:24:45,075 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:24:45,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342427513] [2021-11-21 01:24:45,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342427513] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:24:45,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745888853] [2021-11-21 01:24:45,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:24:45,076 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:24:45,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd934b8-bdb7-42c1-8d95-4636830fc10d/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:24:45,077 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd934b8-bdb7-42c1-8d95-4636830fc10d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:24:45,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd934b8-bdb7-42c1-8d95-4636830fc10d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-21 01:24:45,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:24:45,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 79 conjunts are in the unsatisfiable core [2021-11-21 01:24:45,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:24:45,462 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 01:24:45,462 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 01:24:45,584 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 01:24:45,592 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 01:25:20,328 INFO L354 Elim1Store]: treesize reduction 317, result has 20.2 percent of original size [2021-11-21 01:25:20,329 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 01:25:20,482 INFO L354 Elim1Store]: treesize reduction 546, result has 9.5 percent of original size [2021-11-21 01:25:20,482 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 01:25:56,148 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 01:25:56,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:25:58,869 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 01:25:58,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745888853] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:25:58,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1175927883] [2021-11-21 01:25:58,875 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2021-11-21 01:25:58,875 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:25:58,876 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:25:58,876 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:25:58,876 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:25:59,206 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 01:25:59,230 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 01:25:59,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:59,839 INFO L354 Elim1Store]: treesize reduction 159, result has 20.9 percent of original size [2021-11-21 01:25:59,840 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 01:25:59,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:59,999 INFO L354 Elim1Store]: treesize reduction 143, result has 32.9 percent of original size [2021-11-21 01:25:59,999 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 01:26:00,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:26:00,119 INFO L354 Elim1Store]: treesize reduction 140, result has 30.3 percent of original size [2021-11-21 01:26:00,119 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 01:26:00,197 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 01:26:00,201 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 01:26:00,226 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 01:26:00,234 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 01:26:00,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:26:00,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:26:00,289 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 01:26:00,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:26:00,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:26:00,308 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 01:26:00,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:26:00,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:26:00,467 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 01:26:00,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:26:00,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:26:00,484 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 01:26:00,707 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 01:26:00,722 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 01:26:00,784 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 01:26:00,801 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 01:26:01,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:26:01,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:26:01,271 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 01:26:01,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:26:01,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:26:01,311 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 01:26:01,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:26:01,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:26:01,877 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 01:26:01,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:26:01,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:26:01,908 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 01:26:02,126 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 01:26:02,183 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 01:26:02,275 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 01:26:02,283 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 01:26:07,557 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_successful_malloc with input of size 33 for LOIs [2021-11-21 01:26:07,644 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_is_in_set with input of size 45 for LOIs [2021-11-21 01:26:08,701 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_list_add with input of size 41 for LOIs [2021-11-21 01:26:09,269 INFO L197 IcfgInterpreter]: Interpreting procedure __ldv_list_add with input of size 49 for LOIs [2021-11-21 01:26:09,621 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:26:27,886 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:26:27,887 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-21 01:26:27,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 29 [2021-11-21 01:26:27,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110774858] [2021-11-21 01:26:27,887 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-21 01:26:27,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-21 01:26:27,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:26:27,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-21 01:26:27,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=2335, Unknown=22, NotChecked=98, Total=2652 [2021-11-21 01:26:27,889 INFO L87 Difference]: Start difference. First operand 139 states and 179 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 01:26:48,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:26:48,201 INFO L93 Difference]: Finished difference Result 228 states and 303 transitions. [2021-11-21 01:26:48,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-21 01:26:48,201 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 01:26:48,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:26:48,204 INFO L225 Difference]: With dead ends: 228 [2021-11-21 01:26:48,204 INFO L226 Difference]: Without dead ends: 172 [2021-11-21 01:26:48,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1391 ImplicationChecksByTransitivity, 75.4s TimeCoverageRelationStatistics Valid=397, Invalid=4407, Unknown=30, NotChecked=136, Total=4970 [2021-11-21 01:26:48,207 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 65 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 190 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:26:48,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 435 Invalid, 771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 495 Invalid, 0 Unknown, 190 Unchecked, 0.8s Time] [2021-11-21 01:26:48,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-11-21 01:26:48,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 138. [2021-11-21 01:26:48,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 92 states have (on average 1.2717391304347827) internal successors, (117), 98 states have internal predecessors, (117), 24 states have call successors, (24), 16 states have call predecessors, (24), 19 states have return successors, (35), 25 states have call predecessors, (35), 24 states have call successors, (35) [2021-11-21 01:26:48,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 176 transitions. [2021-11-21 01:26:48,260 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 176 transitions. Word has length 27 [2021-11-21 01:26:48,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:26:48,261 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 176 transitions. [2021-11-21 01:26:48,261 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 01:26:48,261 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 176 transitions. [2021-11-21 01:26:48,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-21 01:26:48,264 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:26:48,264 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 01:26:48,301 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd934b8-bdb7-42c1-8d95-4636830fc10d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-21 01:26:48,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd934b8-bdb7-42c1-8d95-4636830fc10d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:26:48,490 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 01:26:48,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:26:48,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1101495842, now seen corresponding path program 2 times [2021-11-21 01:26:48,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:26:48,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568371814] [2021-11-21 01:26:48,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:26:48,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:26:48,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:26:51,135 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 01:26:51,135 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:26:51,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568371814] [2021-11-21 01:26:51,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568371814] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:26:51,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831884446] [2021-11-21 01:26:51,136 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 01:26:51,136 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:26:51,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd934b8-bdb7-42c1-8d95-4636830fc10d/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:26:51,137 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd934b8-bdb7-42c1-8d95-4636830fc10d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:26:51,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd934b8-bdb7-42c1-8d95-4636830fc10d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-21 01:26:51,253 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-21 01:26:51,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:26:51,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 130 conjunts are in the unsatisfiable core [2021-11-21 01:26:51,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:26:51,613 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 01:26:51,613 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 01:26:51,793 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 01:26:51,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 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 01:27:12,769 INFO L354 Elim1Store]: treesize reduction 304, result has 9.8 percent of original size [2021-11-21 01:27:12,769 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 01:27:12,900 INFO L354 Elim1Store]: treesize reduction 429, result has 21.3 percent of original size [2021-11-21 01:27:12,900 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 01:27:13,456 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 01:27:13,891 INFO L354 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2021-11-21 01:27:13,891 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 01:27:14,381 INFO L354 Elim1Store]: treesize reduction 144, result has 0.7 percent of original size [2021-11-21 01:27:14,381 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 01:27:14,479 INFO L354 Elim1Store]: treesize reduction 40, result has 55.1 percent of original size [2021-11-21 01:27:14,479 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 01:28:22,518 INFO L354 Elim1Store]: treesize reduction 1002, result has 20.3 percent of original size [2021-11-21 01:28:22,519 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 01:28:22,989 INFO L354 Elim1Store]: treesize reduction 916, result has 13.2 percent of original size [2021-11-21 01:28:22,989 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