./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-block-pktcdvd.ko.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_dcaa592e-4c8c-49d6-8d6b-609a2227f24a/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcaa592e-4c8c-49d6-8d6b-609a2227f24a/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_dcaa592e-4c8c-49d6-8d6b-609a2227f24a/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcaa592e-4c8c-49d6-8d6b-609a2227f24a/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-block-pktcdvd.ko.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcaa592e-4c8c-49d6-8d6b-609a2227f24a/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcaa592e-4c8c-49d6-8d6b-609a2227f24a/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 64bit --witnessprinter.graph.data.programhash f81c0ae249d872dcfa63b19fa0949c00123fc4e906e065a111b2d70e300e79eb --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:29:36,762 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:29:36,764 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:29:36,795 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:29:36,796 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:29:36,797 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:29:36,799 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:29:36,801 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:29:36,803 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:29:36,804 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:29:36,805 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:29:36,810 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:29:36,812 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:29:36,815 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:29:36,817 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:29:36,820 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:29:36,823 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:29:36,831 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:29:36,833 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:29:36,835 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:29:36,839 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:29:36,840 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:29:36,842 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:29:36,844 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:29:36,848 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:29:36,855 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:29:36,855 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:29:36,856 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:29:36,858 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:29:36,859 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:29:36,860 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:29:36,861 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:29:36,863 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:29:36,864 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:29:36,866 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:29:36,866 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:29:36,867 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:29:36,867 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:29:36,867 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:29:36,868 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:29:36,869 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:29:36,870 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcaa592e-4c8c-49d6-8d6b-609a2227f24a/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 00:29:36,913 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:29:36,913 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:29:36,914 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:29:36,914 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:29:36,915 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:29:36,916 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:29:36,916 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:29:36,916 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:29:36,917 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:29:36,917 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 00:29:36,918 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:29:36,919 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:29:36,919 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 00:29:36,919 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 00:29:36,919 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:29:36,920 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 00:29:36,920 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 00:29:36,920 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 00:29:36,921 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:29:36,921 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:29:36,922 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:29:36,922 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:29:36,922 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:29:36,923 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:29:36,923 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:29:36,923 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:29:36,925 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:29:36,925 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:29:36,925 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:29:36,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:29:36,926 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:29:36,926 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:29:36,927 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:29:36,927 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 00:29:36,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 00:29:36,927 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:29:36,928 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:29:36,928 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:29:36,928 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_dcaa592e-4c8c-49d6-8d6b-609a2227f24a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcaa592e-4c8c-49d6-8d6b-609a2227f24a/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f81c0ae249d872dcfa63b19fa0949c00123fc4e906e065a111b2d70e300e79eb [2021-11-21 00:29:37,255 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:29:37,281 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:29:37,284 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:29:37,286 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:29:37,287 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:29:37,288 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcaa592e-4c8c-49d6-8d6b-609a2227f24a/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-block-pktcdvd.ko.cil.out.i [2021-11-21 00:29:37,383 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcaa592e-4c8c-49d6-8d6b-609a2227f24a/bin/utaipan-TEXQjIfE4P/data/399c4d4b9/3aef4253a276446d951d7da30c051278/FLAG546abd2be [2021-11-21 00:29:38,472 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:29:38,474 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcaa592e-4c8c-49d6-8d6b-609a2227f24a/sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-block-pktcdvd.ko.cil.out.i [2021-11-21 00:29:38,532 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcaa592e-4c8c-49d6-8d6b-609a2227f24a/bin/utaipan-TEXQjIfE4P/data/399c4d4b9/3aef4253a276446d951d7da30c051278/FLAG546abd2be [2021-11-21 00:29:38,784 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcaa592e-4c8c-49d6-8d6b-609a2227f24a/bin/utaipan-TEXQjIfE4P/data/399c4d4b9/3aef4253a276446d951d7da30c051278 [2021-11-21 00:29:38,787 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:29:38,789 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:29:38,791 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:29:38,791 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:29:38,796 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:29:38,797 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:29:38" (1/1) ... [2021-11-21 00:29:38,799 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20d6ae85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:29:38, skipping insertion in model container [2021-11-21 00:29:38,799 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:29:38" (1/1) ... [2021-11-21 00:29:38,808 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:29:38,954 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:29:41,454 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_dcaa592e-4c8c-49d6-8d6b-609a2227f24a/sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-block-pktcdvd.ko.cil.out.i[265142,265155] [2021-11-21 00:29:41,510 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:29:41,570 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:29:41,982 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_dcaa592e-4c8c-49d6-8d6b-609a2227f24a/sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-block-pktcdvd.ko.cil.out.i[265142,265155] [2021-11-21 00:29:41,999 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:29:42,144 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:29:42,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:29:42 WrapperNode [2021-11-21 00:29:42,145 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:29:42,146 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:29:42,146 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:29:42,147 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:29:42,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:29:42" (1/1) ... [2021-11-21 00:29:42,359 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:29:42" (1/1) ... [2021-11-21 00:29:42,583 INFO L137 Inliner]: procedures = 309, calls = 2428, calls flagged for inlining = 139, calls inlined = 90, statements flattened = 3931 [2021-11-21 00:29:42,584 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:29:42,585 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:29:42,585 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:29:42,586 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:29:42,597 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:29:42" (1/1) ... [2021-11-21 00:29:42,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:29:42" (1/1) ... [2021-11-21 00:29:42,620 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:29:42" (1/1) ... [2021-11-21 00:29:42,620 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:29:42" (1/1) ... [2021-11-21 00:29:42,830 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:29:42" (1/1) ... [2021-11-21 00:29:42,923 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:29:42" (1/1) ... [2021-11-21 00:29:42,956 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:29:42" (1/1) ... [2021-11-21 00:29:42,997 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:29:42,999 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:29:43,000 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:29:43,001 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:29:43,002 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:29:42" (1/1) ... [2021-11-21 00:29:43,013 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:29:43,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcaa592e-4c8c-49d6-8d6b-609a2227f24a/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:29:43,047 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcaa592e-4c8c-49d6-8d6b-609a2227f24a/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:29:43,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcaa592e-4c8c-49d6-8d6b-609a2227f24a/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:29:43,115 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-21 00:29:43,116 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-21 00:29:43,116 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2021-11-21 00:29:43,116 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2021-11-21 00:29:43,116 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_ctl_ioctl [2021-11-21 00:29:43,116 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_ctl_ioctl [2021-11-21 00:29:43,116 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_kobj_release [2021-11-21 00:29:43,116 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_kobj_release [2021-11-21 00:29:43,117 INFO L130 BoogieDeclarations]: Found specification of procedure bdev_get_queue [2021-11-21 00:29:43,117 INFO L138 BoogieDeclarations]: Found implementation of procedure bdev_get_queue [2021-11-21 00:29:43,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-21 00:29:43,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-21 00:29:43,118 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_get_disc_info [2021-11-21 00:29:43,118 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_get_disc_info [2021-11-21 00:29:43,118 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_bio_alloc [2021-11-21 00:29:43,118 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_bio_alloc [2021-11-21 00:29:43,119 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-21 00:29:43,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-21 00:29:43,119 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_setup_dev [2021-11-21 00:29:43,119 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_setup_dev [2021-11-21 00:29:43,120 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2021-11-21 00:29:43,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2021-11-21 00:29:43,120 INFO L130 BoogieDeclarations]: Found specification of procedure bdget [2021-11-21 00:29:43,120 INFO L138 BoogieDeclarations]: Found implementation of procedure bdget [2021-11-21 00:29:43,121 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_set_speed [2021-11-21 00:29:43,121 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_set_speed [2021-11-21 00:29:43,121 INFO L130 BoogieDeclarations]: Found specification of procedure bdevname [2021-11-21 00:29:43,121 INFO L138 BoogieDeclarations]: Found implementation of procedure bdevname [2021-11-21 00:29:43,122 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-21 00:29:43,122 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-21 00:29:43,122 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_shrink_pktlist [2021-11-21 00:29:43,122 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_shrink_pktlist [2021-11-21 00:29:43,123 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2021-11-21 00:29:43,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2021-11-21 00:29:43,123 INFO L130 BoogieDeclarations]: Found specification of procedure set_capacity [2021-11-21 00:29:43,123 INFO L138 BoogieDeclarations]: Found implementation of procedure set_capacity [2021-11-21 00:29:43,123 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-21 00:29:43,124 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-21 00:29:43,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-21 00:29:43,124 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-21 00:29:43,124 INFO L130 BoogieDeclarations]: Found specification of procedure blkdev_put [2021-11-21 00:29:43,125 INFO L138 BoogieDeclarations]: Found implementation of procedure blkdev_put [2021-11-21 00:29:43,125 INFO L130 BoogieDeclarations]: Found specification of procedure new_encode_dev [2021-11-21 00:29:43,125 INFO L138 BoogieDeclarations]: Found implementation of procedure new_encode_dev [2021-11-21 00:29:43,125 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-21 00:29:43,126 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-21 00:29:43,126 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_mode_select [2021-11-21 00:29:43,127 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_mode_select [2021-11-21 00:29:43,127 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_kobj_remove [2021-11-21 00:29:43,128 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_kobj_remove [2021-11-21 00:29:43,129 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-11-21 00:29:43,130 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-11-21 00:29:43,130 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_debugfs_cleanup [2021-11-21 00:29:43,131 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_debugfs_cleanup [2021-11-21 00:29:43,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 00:29:43,132 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-21 00:29:43,132 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-21 00:29:43,132 INFO L130 BoogieDeclarations]: Found specification of procedure bio_init [2021-11-21 00:29:43,133 INFO L138 BoogieDeclarations]: Found implementation of procedure bio_init [2021-11-21 00:29:43,133 INFO L130 BoogieDeclarations]: Found specification of procedure set_blocksize [2021-11-21 00:29:43,134 INFO L138 BoogieDeclarations]: Found implementation of procedure set_blocksize [2021-11-21 00:29:43,134 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_dump_sense [2021-11-21 00:29:43,135 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_dump_sense [2021-11-21 00:29:43,135 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_create_kmalloc_pool [2021-11-21 00:29:43,135 INFO L138 BoogieDeclarations]: Found implementation of procedure mempool_create_kmalloc_pool [2021-11-21 00:29:43,135 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_destroy [2021-11-21 00:29:43,136 INFO L138 BoogieDeclarations]: Found implementation of procedure mempool_destroy [2021-11-21 00:29:43,136 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 00:29:43,136 INFO L130 BoogieDeclarations]: Found specification of procedure remove_proc_entry [2021-11-21 00:29:43,136 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_proc_entry [2021-11-21 00:29:43,136 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_lock_door [2021-11-21 00:29:43,137 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_lock_door [2021-11-21 00:29:43,137 INFO L130 BoogieDeclarations]: Found specification of procedure blkdev_get [2021-11-21 00:29:43,138 INFO L138 BoogieDeclarations]: Found implementation of procedure blkdev_get [2021-11-21 00:29:43,138 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_remove_dev [2021-11-21 00:29:43,139 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_remove_dev [2021-11-21 00:29:43,139 INFO L130 BoogieDeclarations]: Found specification of procedure __free_pages [2021-11-21 00:29:43,139 INFO L138 BoogieDeclarations]: Found implementation of procedure __free_pages [2021-11-21 00:29:43,140 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2021-11-21 00:29:43,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2021-11-21 00:29:43,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 00:29:43,141 INFO L130 BoogieDeclarations]: Found specification of procedure bio_put [2021-11-21 00:29:43,141 INFO L138 BoogieDeclarations]: Found implementation of procedure bio_put [2021-11-21 00:29:43,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 00:29:43,142 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-21 00:29:43,142 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-21 00:29:43,143 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2021-11-21 00:29:43,143 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2021-11-21 00:29:43,143 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_remove [2021-11-21 00:29:43,144 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_remove [2021-11-21 00:29:43,145 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_dir [2021-11-21 00:29:43,145 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_dir [2021-11-21 00:29:43,145 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-21 00:29:43,146 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-21 00:29:43,146 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-21 00:29:43,147 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-21 00:29:43,147 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-11-21 00:29:43,147 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-11-21 00:29:43,147 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-21 00:29:43,148 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-21 00:29:43,148 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-21 00:29:43,148 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-21 00:29:43,148 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_sysfs_cleanup [2021-11-21 00:29:43,149 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_sysfs_cleanup [2021-11-21 00:29:43,149 INFO L130 BoogieDeclarations]: Found specification of procedure bio_list_init [2021-11-21 00:29:43,149 INFO L138 BoogieDeclarations]: Found implementation of procedure bio_list_init [2021-11-21 00:29:43,150 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_find_dev_from_minor [2021-11-21 00:29:43,150 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_find_dev_from_minor [2021-11-21 00:29:43,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-21 00:29:43,150 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-21 00:29:43,151 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-21 00:29:43,152 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-21 00:29:43,156 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-21 00:29:43,156 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2021-11-21 00:29:43,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2021-11-21 00:29:43,156 INFO L130 BoogieDeclarations]: Found specification of procedure init_write_congestion_marks [2021-11-21 00:29:43,157 INFO L138 BoogieDeclarations]: Found implementation of procedure init_write_congestion_marks [2021-11-21 00:29:43,159 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-21 00:29:43,159 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-21 00:29:43,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-21 00:29:43,160 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_get_track_info [2021-11-21 00:29:43,167 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_get_track_info [2021-11-21 00:29:43,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 00:29:43,168 INFO L130 BoogieDeclarations]: Found specification of procedure single_open [2021-11-21 00:29:43,168 INFO L138 BoogieDeclarations]: Found implementation of procedure single_open [2021-11-21 00:29:43,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-21 00:29:43,168 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-21 00:29:43,168 INFO L130 BoogieDeclarations]: Found specification of procedure new_decode_dev [2021-11-21 00:29:43,169 INFO L138 BoogieDeclarations]: Found implementation of procedure new_decode_dev [2021-11-21 00:29:43,169 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-21 00:29:43,169 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-21 00:29:43,169 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_kobj_create [2021-11-21 00:29:43,170 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_kobj_create [2021-11-21 00:29:43,170 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-21 00:29:43,170 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-21 00:29:43,170 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_blkdev [2021-11-21 00:29:43,170 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_blkdev [2021-11-21 00:29:43,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 00:29:43,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 00:29:43,171 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2021-11-21 00:29:43,171 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2021-11-21 00:29:43,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:29:43,172 INFO L130 BoogieDeclarations]: Found specification of procedure kobject_put [2021-11-21 00:29:43,172 INFO L138 BoogieDeclarations]: Found implementation of procedure kobject_put [2021-11-21 00:29:43,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 00:29:43,172 INFO L130 BoogieDeclarations]: Found specification of procedure blk_cleanup_queue [2021-11-21 00:29:43,172 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_cleanup_queue [2021-11-21 00:29:43,173 INFO L130 BoogieDeclarations]: Found specification of procedure queue_max_segments [2021-11-21 00:29:43,173 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_max_segments [2021-11-21 00:29:43,173 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_check_events [2021-11-21 00:29:43,173 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_check_events [2021-11-21 00:29:43,173 INFO L130 BoogieDeclarations]: Found specification of procedure init_cdrom_command [2021-11-21 00:29:43,174 INFO L138 BoogieDeclarations]: Found implementation of procedure init_cdrom_command [2021-11-21 00:29:43,174 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-11-21 00:29:43,174 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-11-21 00:29:43,174 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_mode_sense [2021-11-21 00:29:43,174 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_mode_sense [2021-11-21 00:29:43,175 INFO L130 BoogieDeclarations]: Found specification of procedure put_disk [2021-11-21 00:29:43,175 INFO L138 BoogieDeclarations]: Found implementation of procedure put_disk [2021-11-21 00:29:43,175 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_generic_packet [2021-11-21 00:29:43,175 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_generic_packet [2021-11-21 00:29:43,176 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-21 00:29:43,176 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-21 00:29:43,176 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-21 00:29:43,176 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-21 00:29:43,176 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_max_hw_sectors [2021-11-21 00:29:43,177 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_max_hw_sectors [2021-11-21 00:29:43,177 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_flush_cache [2021-11-21 00:29:43,177 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_flush_cache [2021-11-21 00:29:43,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 00:29:43,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:29:43,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:29:43,178 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-21 00:29:43,178 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-21 00:29:43,965 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:29:43,972 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:29:44,139 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-21 00:29:44,345 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2021-11-21 00:29:44,345 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2021-11-21 00:29:47,991 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-21 00:29:48,001 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-21 00:29:48,003 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-21 00:29:48,005 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-21 00:29:48,012 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-21 00:29:48,013 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-21 00:29:48,055 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-21 00:29:54,803 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##282: assume !false; [2021-11-21 00:29:54,803 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##281: assume false; [2021-11-21 00:29:54,803 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##214: assume !false; [2021-11-21 00:29:54,803 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##213: assume false; [2021-11-21 00:29:54,803 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##301: assume !false; [2021-11-21 00:29:54,803 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##300: assume false; [2021-11-21 00:29:54,804 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##177: assume !false; [2021-11-21 00:29:54,804 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##176: assume false; [2021-11-21 00:29:54,804 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##45: assume !false; [2021-11-21 00:29:54,804 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume false; [2021-11-21 00:29:54,804 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##393: assume !false; [2021-11-21 00:29:54,804 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##392: assume false; [2021-11-21 00:29:54,804 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##153: assume !false; [2021-11-21 00:29:54,804 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##152: assume false; [2021-11-21 00:29:54,858 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:29:55,556 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:29:55,557 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-21 00:29:55,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:29:55 BoogieIcfgContainer [2021-11-21 00:29:55,564 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:29:55,568 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:29:55,569 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:29:55,574 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:29:55,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:29:38" (1/3) ... [2021-11-21 00:29:55,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7598990d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:29:55, skipping insertion in model container [2021-11-21 00:29:55,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:29:42" (2/3) ... [2021-11-21 00:29:55,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7598990d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:29:55, skipping insertion in model container [2021-11-21 00:29:55,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:29:55" (3/3) ... [2021-11-21 00:29:55,578 INFO L111 eAbstractionObserver]: Analyzing ICFG module_get_put-drivers-block-pktcdvd.ko.cil.out.i [2021-11-21 00:29:55,586 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:29:55,586 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 00:29:55,679 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:29:55,701 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 00:29:55,710 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 00:29:55,786 INFO L276 IsEmpty]: Start isEmpty. Operand has 942 states, 604 states have (on average 1.3609271523178808) internal successors, (822), 624 states have internal predecessors, (822), 257 states have call successors, (257), 79 states have call predecessors, (257), 79 states have return successors, (257), 254 states have call predecessors, (257), 257 states have call successors, (257) [2021-11-21 00:29:55,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-21 00:29:55,792 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:29:55,793 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:29:55,794 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:29:55,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:29:55,801 INFO L85 PathProgramCache]: Analyzing trace with hash 604387563, now seen corresponding path program 1 times [2021-11-21 00:29:55,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:29:55,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511784524] [2021-11-21 00:29:55,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:29:55,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:29:56,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:29:56,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:29:56,500 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:29:56,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511784524] [2021-11-21 00:29:56,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511784524] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:29:56,501 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:29:56,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:29:56,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145556658] [2021-11-21 00:29:56,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:29:56,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:29:56,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:29:56,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:29:56,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:29:56,556 INFO L87 Difference]: Start difference. First operand has 942 states, 604 states have (on average 1.3609271523178808) internal successors, (822), 624 states have internal predecessors, (822), 257 states have call successors, (257), 79 states have call predecessors, (257), 79 states have return successors, (257), 254 states have call predecessors, (257), 257 states have call successors, (257) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 00:29:59,821 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:30:00,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:30:00,363 INFO L93 Difference]: Finished difference Result 2741 states and 3894 transitions. [2021-11-21 00:30:00,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:30:00,367 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2021-11-21 00:30:00,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:30:00,434 INFO L225 Difference]: With dead ends: 2741 [2021-11-21 00:30:00,434 INFO L226 Difference]: Without dead ends: 1806 [2021-11-21 00:30:00,452 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:30:00,458 INFO L933 BasicCegarLoop]: 1403 mSDtfsCounter, 1283 mSDsluCounter, 1283 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1283 SdHoareTripleChecker+Valid, 2532 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:30:00,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1283 Valid, 2532 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 324 Invalid, 1 Unknown, 0 Unchecked, 3.5s Time] [2021-11-21 00:30:00,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1806 states. [2021-11-21 00:30:00,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1806 to 1803. [2021-11-21 00:30:00,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1803 states, 1160 states have (on average 1.3508620689655173) internal successors, (1567), 1193 states have internal predecessors, (1567), 487 states have call successors, (487), 156 states have call predecessors, (487), 155 states have return successors, (488), 479 states have call predecessors, (488), 485 states have call successors, (488) [2021-11-21 00:30:00,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1803 states to 1803 states and 2542 transitions. [2021-11-21 00:30:00,803 INFO L78 Accepts]: Start accepts. Automaton has 1803 states and 2542 transitions. Word has length 18 [2021-11-21 00:30:00,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:30:00,803 INFO L470 AbstractCegarLoop]: Abstraction has 1803 states and 2542 transitions. [2021-11-21 00:30:00,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 00:30:00,804 INFO L276 IsEmpty]: Start isEmpty. Operand 1803 states and 2542 transitions. [2021-11-21 00:30:00,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-21 00:30:00,817 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:30:00,817 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 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, 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, 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, 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, 1] [2021-11-21 00:30:00,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 00:30:00,818 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:30:00,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:30:00,819 INFO L85 PathProgramCache]: Analyzing trace with hash -682701011, now seen corresponding path program 1 times [2021-11-21 00:30:00,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:30:00,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377027621] [2021-11-21 00:30:00,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:30:00,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:30:00,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:30:01,071 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-21 00:30:01,072 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:30:01,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377027621] [2021-11-21 00:30:01,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377027621] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:30:01,072 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:30:01,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:30:01,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345803244] [2021-11-21 00:30:01,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:30:01,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:30:01,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:30:01,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:30:01,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:30:01,077 INFO L87 Difference]: Start difference. First operand 1803 states and 2542 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-21 00:30:04,512 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-21 00:30:04,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:30:04,910 INFO L93 Difference]: Finished difference Result 3572 states and 5035 transitions. [2021-11-21 00:30:04,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:30:04,913 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 107 [2021-11-21 00:30:04,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:30:04,935 INFO L225 Difference]: With dead ends: 3572 [2021-11-21 00:30:04,935 INFO L226 Difference]: Without dead ends: 1803 [2021-11-21 00:30:04,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:30:04,947 INFO L933 BasicCegarLoop]: 1158 mSDtfsCounter, 1 mSDsluCounter, 2632 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3471 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-11-21 00:30:04,952 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 3471 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 488 Invalid, 1 Unknown, 0 Unchecked, 3.7s Time] [2021-11-21 00:30:04,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1803 states. [2021-11-21 00:30:05,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1803 to 1803. [2021-11-21 00:30:05,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1803 states, 1160 states have (on average 1.35) internal successors, (1566), 1193 states have internal predecessors, (1566), 487 states have call successors, (487), 156 states have call predecessors, (487), 155 states have return successors, (488), 479 states have call predecessors, (488), 485 states have call successors, (488) [2021-11-21 00:30:05,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1803 states to 1803 states and 2541 transitions. [2021-11-21 00:30:05,101 INFO L78 Accepts]: Start accepts. Automaton has 1803 states and 2541 transitions. Word has length 107 [2021-11-21 00:30:05,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:30:05,102 INFO L470 AbstractCegarLoop]: Abstraction has 1803 states and 2541 transitions. [2021-11-21 00:30:05,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-21 00:30:05,107 INFO L276 IsEmpty]: Start isEmpty. Operand 1803 states and 2541 transitions. [2021-11-21 00:30:05,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-21 00:30:05,116 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:30:05,117 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:30:05,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 00:30:05,118 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:30:05,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:30:05,119 INFO L85 PathProgramCache]: Analyzing trace with hash 460344916, now seen corresponding path program 1 times [2021-11-21 00:30:05,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:30:05,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364541939] [2021-11-21 00:30:05,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:30:05,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:30:05,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:30:05,543 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:30:05,543 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:30:05,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364541939] [2021-11-21 00:30:05,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364541939] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:30:05,544 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:30:05,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:30:05,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899474746] [2021-11-21 00:30:05,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:30:05,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:30:05,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:30:05,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:30:05,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:30:05,547 INFO L87 Difference]: Start difference. First operand 1803 states and 2541 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-21 00:30:06,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:30:06,710 INFO L93 Difference]: Finished difference Result 3648 states and 5158 transitions. [2021-11-21 00:30:06,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:30:06,711 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 112 [2021-11-21 00:30:06,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:30:06,731 INFO L225 Difference]: With dead ends: 3648 [2021-11-21 00:30:06,732 INFO L226 Difference]: Without dead ends: 1881 [2021-11-21 00:30:06,742 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:30:06,747 INFO L933 BasicCegarLoop]: 1174 mSDtfsCounter, 30 mSDsluCounter, 1314 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 2328 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:30:06,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 2328 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-21 00:30:06,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1881 states. [2021-11-21 00:30:06,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1881 to 1811. [2021-11-21 00:30:06,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1811 states, 1168 states have (on average 1.351027397260274) internal successors, (1578), 1201 states have internal predecessors, (1578), 487 states have call successors, (487), 156 states have call predecessors, (487), 155 states have return successors, (488), 479 states have call predecessors, (488), 485 states have call successors, (488) [2021-11-21 00:30:06,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1811 states to 1811 states and 2553 transitions. [2021-11-21 00:30:06,879 INFO L78 Accepts]: Start accepts. Automaton has 1811 states and 2553 transitions. Word has length 112 [2021-11-21 00:30:06,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:30:06,882 INFO L470 AbstractCegarLoop]: Abstraction has 1811 states and 2553 transitions. [2021-11-21 00:30:06,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-21 00:30:06,883 INFO L276 IsEmpty]: Start isEmpty. Operand 1811 states and 2553 transitions. [2021-11-21 00:30:06,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-21 00:30:06,895 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:30:06,896 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:30:06,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 00:30:06,896 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:30:06,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:30:06,898 INFO L85 PathProgramCache]: Analyzing trace with hash 259115316, now seen corresponding path program 1 times [2021-11-21 00:30:06,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:30:06,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159827599] [2021-11-21 00:30:06,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:30:06,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:30:07,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:30:07,260 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:30:07,261 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:30:07,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159827599] [2021-11-21 00:30:07,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159827599] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:30:07,262 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:30:07,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:30:07,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423144054] [2021-11-21 00:30:07,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:30:07,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:30:07,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:30:07,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:30:07,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:30:07,265 INFO L87 Difference]: Start difference. First operand 1811 states and 2553 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-21 00:30:11,354 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:30:11,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:30:11,718 INFO L93 Difference]: Finished difference Result 3590 states and 5061 transitions. [2021-11-21 00:30:11,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:30:11,719 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 114 [2021-11-21 00:30:11,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:30:11,736 INFO L225 Difference]: With dead ends: 3590 [2021-11-21 00:30:11,736 INFO L226 Difference]: Without dead ends: 1811 [2021-11-21 00:30:11,744 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:30:11,745 INFO L933 BasicCegarLoop]: 1157 mSDtfsCounter, 3 mSDsluCounter, 3940 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 4621 SdHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:30:11,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 4621 Invalid, 658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 657 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2021-11-21 00:30:11,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1811 states. [2021-11-21 00:30:11,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1811 to 1811. [2021-11-21 00:30:11,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1811 states, 1168 states have (on average 1.3501712328767124) internal successors, (1577), 1200 states have internal predecessors, (1577), 487 states have call successors, (487), 156 states have call predecessors, (487), 155 states have return successors, (488), 479 states have call predecessors, (488), 485 states have call successors, (488) [2021-11-21 00:30:11,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1811 states to 1811 states and 2552 transitions. [2021-11-21 00:30:11,860 INFO L78 Accepts]: Start accepts. Automaton has 1811 states and 2552 transitions. Word has length 114 [2021-11-21 00:30:11,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:30:11,861 INFO L470 AbstractCegarLoop]: Abstraction has 1811 states and 2552 transitions. [2021-11-21 00:30:11,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-21 00:30:11,861 INFO L276 IsEmpty]: Start isEmpty. Operand 1811 states and 2552 transitions. [2021-11-21 00:30:11,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-21 00:30:11,866 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:30:11,866 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:30:11,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 00:30:11,866 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:30:11,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:30:11,870 INFO L85 PathProgramCache]: Analyzing trace with hash -100239267, now seen corresponding path program 1 times [2021-11-21 00:30:11,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:30:11,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704211807] [2021-11-21 00:30:11,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:30:11,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:30:12,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:30:12,196 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-21 00:30:12,196 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:30:12,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704211807] [2021-11-21 00:30:12,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704211807] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:30:12,197 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:30:12,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 00:30:12,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571888667] [2021-11-21 00:30:12,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:30:12,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 00:30:12,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:30:12,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 00:30:12,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:30:12,200 INFO L87 Difference]: Start difference. First operand 1811 states and 2552 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-21 00:30:14,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:30:14,601 INFO L93 Difference]: Finished difference Result 3616 states and 5095 transitions. [2021-11-21 00:30:14,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:30:14,602 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 138 [2021-11-21 00:30:14,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:30:14,619 INFO L225 Difference]: With dead ends: 3616 [2021-11-21 00:30:14,619 INFO L226 Difference]: Without dead ends: 1811 [2021-11-21 00:30:14,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-21 00:30:14,631 INFO L933 BasicCegarLoop]: 1155 mSDtfsCounter, 7 mSDsluCounter, 5253 mSDsCounter, 0 mSdLazyCounter, 832 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 5768 SdHoareTripleChecker+Invalid, 835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:30:14,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 5768 Invalid, 835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 832 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-21 00:30:14,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1811 states. [2021-11-21 00:30:14,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1811 to 1811. [2021-11-21 00:30:14,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1811 states, 1168 states have (on average 1.3493150684931507) internal successors, (1576), 1200 states have internal predecessors, (1576), 487 states have call successors, (487), 156 states have call predecessors, (487), 155 states have return successors, (488), 479 states have call predecessors, (488), 485 states have call successors, (488) [2021-11-21 00:30:14,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1811 states to 1811 states and 2551 transitions. [2021-11-21 00:30:14,799 INFO L78 Accepts]: Start accepts. Automaton has 1811 states and 2551 transitions. Word has length 138 [2021-11-21 00:30:14,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:30:14,800 INFO L470 AbstractCegarLoop]: Abstraction has 1811 states and 2551 transitions. [2021-11-21 00:30:14,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-21 00:30:14,800 INFO L276 IsEmpty]: Start isEmpty. Operand 1811 states and 2551 transitions. [2021-11-21 00:30:14,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-21 00:30:14,805 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:30:14,805 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 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, 1] [2021-11-21 00:30:14,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 00:30:14,806 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:30:14,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:30:14,807 INFO L85 PathProgramCache]: Analyzing trace with hash 740371038, now seen corresponding path program 1 times [2021-11-21 00:30:14,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:30:14,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27924051] [2021-11-21 00:30:14,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:30:14,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:30:14,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:30:15,042 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-21 00:30:15,042 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:30:15,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27924051] [2021-11-21 00:30:15,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27924051] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:30:15,043 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:30:15,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:30:15,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762139952] [2021-11-21 00:30:15,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:30:15,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:30:15,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:30:15,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:30:15,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:30:15,046 INFO L87 Difference]: Start difference. First operand 1811 states and 2551 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-21 00:30:18,650 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:30:21,050 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:30:21,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:30:21,905 INFO L93 Difference]: Finished difference Result 6052 states and 9057 transitions. [2021-11-21 00:30:21,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:30:21,906 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 140 [2021-11-21 00:30:21,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:30:21,949 INFO L225 Difference]: With dead ends: 6052 [2021-11-21 00:30:21,949 INFO L226 Difference]: Without dead ends: 4270 [2021-11-21 00:30:21,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:30:21,962 INFO L933 BasicCegarLoop]: 2411 mSDtfsCounter, 1372 mSDsluCounter, 4183 mSDsCounter, 0 mSdLazyCounter, 696 mSolverCounterSat, 257 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1627 SdHoareTripleChecker+Valid, 6179 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 696 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2021-11-21 00:30:21,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1627 Valid, 6179 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [257 Valid, 696 Invalid, 2 Unknown, 0 Unchecked, 6.6s Time] [2021-11-21 00:30:21,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4270 states. [2021-11-21 00:30:22,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4270 to 1813. [2021-11-21 00:30:22,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1813 states, 1170 states have (on average 1.3487179487179488) internal successors, (1578), 1202 states have internal predecessors, (1578), 487 states have call successors, (487), 156 states have call predecessors, (487), 155 states have return successors, (488), 479 states have call predecessors, (488), 485 states have call successors, (488) [2021-11-21 00:30:22,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1813 states to 1813 states and 2553 transitions. [2021-11-21 00:30:22,147 INFO L78 Accepts]: Start accepts. Automaton has 1813 states and 2553 transitions. Word has length 140 [2021-11-21 00:30:22,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:30:22,149 INFO L470 AbstractCegarLoop]: Abstraction has 1813 states and 2553 transitions. [2021-11-21 00:30:22,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-21 00:30:22,150 INFO L276 IsEmpty]: Start isEmpty. Operand 1813 states and 2553 transitions. [2021-11-21 00:30:22,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-21 00:30:22,155 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:30:22,155 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 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, 1, 1, 1] [2021-11-21 00:30:22,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 00:30:22,156 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:30:22,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:30:22,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1862576550, now seen corresponding path program 1 times [2021-11-21 00:30:22,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:30:22,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706600887] [2021-11-21 00:30:22,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:30:22,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:30:22,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:30:22,573 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-21 00:30:22,573 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:30:22,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706600887] [2021-11-21 00:30:22,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706600887] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:30:22,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862609666] [2021-11-21 00:30:22,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:30:22,575 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:30:22,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcaa592e-4c8c-49d6-8d6b-609a2227f24a/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:30:22,578 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcaa592e-4c8c-49d6-8d6b-609a2227f24a/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:30:22,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcaa592e-4c8c-49d6-8d6b-609a2227f24a/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 00:30:23,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:30:23,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 3011 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-21 00:30:23,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:30:24,135 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-21 00:30:24,136 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:30:24,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862609666] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:30:24,136 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 00:30:24,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-11-21 00:30:24,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830810649] [2021-11-21 00:30:24,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:30:24,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 00:30:24,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:30:24,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 00:30:24,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-11-21 00:30:24,140 INFO L87 Difference]: Start difference. First operand 1813 states and 2553 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 4 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2021-11-21 00:30:28,159 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:30:28,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:30:28,547 INFO L93 Difference]: Finished difference Result 3618 states and 5095 transitions. [2021-11-21 00:30:28,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-21 00:30:28,548 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 4 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) Word has length 144 [2021-11-21 00:30:28,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:30:28,566 INFO L225 Difference]: With dead ends: 3618 [2021-11-21 00:30:28,567 INFO L226 Difference]: Without dead ends: 1795 [2021-11-21 00:30:28,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2021-11-21 00:30:28,578 INFO L933 BasicCegarLoop]: 1154 mSDtfsCounter, 15 mSDsluCounter, 6548 mSDsCounter, 0 mSdLazyCounter, 992 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 6907 SdHoareTripleChecker+Invalid, 999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 992 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:30:28,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 6907 Invalid, 999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 992 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2021-11-21 00:30:28,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1795 states. [2021-11-21 00:30:28,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1795 to 1795. [2021-11-21 00:30:28,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1795 states, 1161 states have (on average 1.3479758828596038) internal successors, (1565), 1192 states have internal predecessors, (1565), 481 states have call successors, (481), 153 states have call predecessors, (481), 152 states have return successors, (482), 473 states have call predecessors, (482), 479 states have call successors, (482) [2021-11-21 00:30:28,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1795 states to 1795 states and 2528 transitions. [2021-11-21 00:30:28,735 INFO L78 Accepts]: Start accepts. Automaton has 1795 states and 2528 transitions. Word has length 144 [2021-11-21 00:30:28,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:30:28,735 INFO L470 AbstractCegarLoop]: Abstraction has 1795 states and 2528 transitions. [2021-11-21 00:30:28,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 4 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2021-11-21 00:30:28,736 INFO L276 IsEmpty]: Start isEmpty. Operand 1795 states and 2528 transitions. [2021-11-21 00:30:28,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-21 00:30:28,742 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:30:28,743 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:30:28,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcaa592e-4c8c-49d6-8d6b-609a2227f24a/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-21 00:30:28,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcaa592e-4c8c-49d6-8d6b-609a2227f24a/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:30:28,969 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:30:28,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:30:28,970 INFO L85 PathProgramCache]: Analyzing trace with hash -2046284330, now seen corresponding path program 1 times [2021-11-21 00:30:28,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:30:28,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782395617] [2021-11-21 00:30:28,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:30:28,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:30:29,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:30:29,326 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-21 00:30:29,326 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:30:29,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782395617] [2021-11-21 00:30:29,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782395617] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:30:29,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163494538] [2021-11-21 00:30:29,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:30:29,327 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:30:29,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcaa592e-4c8c-49d6-8d6b-609a2227f24a/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:30:29,329 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcaa592e-4c8c-49d6-8d6b-609a2227f24a/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:30:29,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcaa592e-4c8c-49d6-8d6b-609a2227f24a/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 00:30:30,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:30:30,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 3098 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-21 00:30:30,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:30:30,775 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-21 00:30:30,776 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:30:30,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163494538] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:30:30,776 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 00:30:30,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2021-11-21 00:30:30,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458245458] [2021-11-21 00:30:30,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:30:30,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:30:30,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:30:30,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:30:30,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-21 00:30:30,779 INFO L87 Difference]: Start difference. First operand 1795 states and 2528 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-21 00:30:34,333 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:30:34,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:30:34,660 INFO L93 Difference]: Finished difference Result 3578 states and 5049 transitions. [2021-11-21 00:30:34,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:30:34,665 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 154 [2021-11-21 00:30:34,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:30:34,681 INFO L225 Difference]: With dead ends: 3578 [2021-11-21 00:30:34,682 INFO L226 Difference]: Without dead ends: 1803 [2021-11-21 00:30:34,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-21 00:30:34,690 INFO L933 BasicCegarLoop]: 1141 mSDtfsCounter, 13 mSDsluCounter, 2591 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 3414 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-11-21 00:30:34,691 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 3414 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 495 Invalid, 1 Unknown, 0 Unchecked, 3.7s Time] [2021-11-21 00:30:34,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1803 states. [2021-11-21 00:30:34,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1803 to 1801. [2021-11-21 00:30:34,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1801 states, 1166 states have (on average 1.346483704974271) internal successors, (1570), 1198 states have internal predecessors, (1570), 481 states have call successors, (481), 153 states have call predecessors, (481), 153 states have return successors, (484), 473 states have call predecessors, (484), 479 states have call successors, (484) [2021-11-21 00:30:34,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1801 states to 1801 states and 2535 transitions. [2021-11-21 00:30:34,815 INFO L78 Accepts]: Start accepts. Automaton has 1801 states and 2535 transitions. Word has length 154 [2021-11-21 00:30:34,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:30:34,816 INFO L470 AbstractCegarLoop]: Abstraction has 1801 states and 2535 transitions. [2021-11-21 00:30:34,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-21 00:30:34,817 INFO L276 IsEmpty]: Start isEmpty. Operand 1801 states and 2535 transitions. [2021-11-21 00:30:34,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-21 00:30:34,822 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:30:34,822 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:30:34,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcaa592e-4c8c-49d6-8d6b-609a2227f24a/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-21 00:30:35,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcaa592e-4c8c-49d6-8d6b-609a2227f24a/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:30:35,049 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:30:35,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:30:35,049 INFO L85 PathProgramCache]: Analyzing trace with hash -659108430, now seen corresponding path program 1 times [2021-11-21 00:30:35,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:30:35,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357162943] [2021-11-21 00:30:35,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:30:35,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:30:35,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:30:35,370 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-21 00:30:35,371 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:30:35,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357162943] [2021-11-21 00:30:35,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357162943] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:30:35,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909433428] [2021-11-21 00:30:35,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:30:35,372 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:30:35,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcaa592e-4c8c-49d6-8d6b-609a2227f24a/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:30:35,373 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcaa592e-4c8c-49d6-8d6b-609a2227f24a/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:30:35,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcaa592e-4c8c-49d6-8d6b-609a2227f24a/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-21 00:30:36,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:30:36,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 3117 conjuncts, 76 conjunts are in the unsatisfiable core [2021-11-21 00:30:36,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:30:36,499 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 00:30:36,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-21 00:30:36,540 INFO L354 Elim1Store]: treesize reduction 16, result has 23.8 percent of original size [2021-11-21 00:30:36,541 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-21 00:30:36,565 INFO L354 Elim1Store]: treesize reduction 16, result has 23.8 percent of original size [2021-11-21 00:30:36,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 33 [2021-11-21 00:30:41,439 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-21 00:30:41,440 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2021-11-21 00:31:02,996 INFO L354 Elim1Store]: treesize reduction 88, result has 11.1 percent of original size [2021-11-21 00:31:02,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 85 treesize of output 88 [2021-11-21 00:31:03,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:31:03,139 INFO L354 Elim1Store]: treesize reduction 157, result has 14.2 percent of original size [2021-11-21 00:31:03,140 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 3 case distinctions, treesize of input 82 treesize of output 93 [2021-11-21 00:31:03,192 INFO L354 Elim1Store]: treesize reduction 88, result has 11.1 percent of original size [2021-11-21 00:31:03,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 75 treesize of output 78 [2021-11-21 00:31:03,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:31:03,257 INFO L354 Elim1Store]: treesize reduction 157, result has 14.2 percent of original size [2021-11-21 00:31:03,258 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 3 case distinctions, treesize of input 72 treesize of output 83 [2021-11-21 00:31:05,631 INFO L354 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2021-11-21 00:31:05,631 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 30 treesize of output 33 [2021-11-21 00:31:14,610 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-11-21 00:31:14,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 33 [2021-11-21 00:31:19,229 INFO L354 Elim1Store]: treesize reduction 87, result has 31.5 percent of original size [2021-11-21 00:31:19,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 127 treesize of output 155 [2021-11-21 00:31:19,317 INFO L354 Elim1Store]: treesize reduction 64, result has 21.0 percent of original size [2021-11-21 00:31:19,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 151 treesize of output 157 [2021-11-21 00:31:19,452 INFO L354 Elim1Store]: treesize reduction 87, result has 31.5 percent of original size [2021-11-21 00:31:19,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 122 treesize of output 150 [2021-11-21 00:31:20,222 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2021-11-21 00:31:20,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:31:20,400 INFO L354 Elim1Store]: treesize reduction 32, result has 41.8 percent of original size [2021-11-21 00:31:20,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 54 treesize of output 72 [2021-11-21 00:31:20,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2021-11-21 00:31:20,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:31:20,863 INFO L354 Elim1Store]: treesize reduction 32, result has 41.8 percent of original size [2021-11-21 00:31:20,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 54 treesize of output 72 [2021-11-21 00:37:41,072 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 00:37:41,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 245 treesize of output 209 [2021-11-21 00:37:41,091 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 00:37:41,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 209 treesize of output 185 [2021-11-21 00:37:41,310 INFO L354 Elim1Store]: treesize reduction 38, result has 76.4 percent of original size [2021-11-21 00:37:41,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 185 treesize of output 287 [2021-11-21 00:37:41,533 INFO L354 Elim1Store]: treesize reduction 38, result has 76.4 percent of original size [2021-11-21 00:37:41,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 287 treesize of output 377 [2021-11-21 00:37:41,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 377 treesize of output 373 [2021-11-21 00:37:41,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 373 treesize of output 369 [2021-11-21 00:38:11,065 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-21 00:38:11,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:38:13,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909433428] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:38:13,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1944552685] [2021-11-21 00:38:13,576 INFO L159 IcfgInterpreter]: Started Sifa with 140 locations of interest [2021-11-21 00:38:13,577 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:38:13,585 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:38:13,592 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:38:13,592 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:38:17,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:38:17,899 INFO L244 Elim1Store]: Index analysis took 477 ms [2021-11-21 00:38:42,640 WARN L227 SmtUtils]: Spent 24.68s on a formula simplification. DAG size of input: 1668 DAG size of output: 1091 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-21 00:38:42,643 INFO L354 Elim1Store]: treesize reduction 1894, result has 46.1 percent of original size [2021-11-21 00:38:42,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 186 select indices, 186 select index equivalence classes, 17207 disjoint index pairs (out of 17205 index pairs), introduced 186 new quantified variables, introduced 185 case distinctions, treesize of input 937 treesize of output 2190 [2021-11-21 00:39:19,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:39:20,138 INFO L244 Elim1Store]: Index analysis took 1038 ms [2021-11-21 00:39:53,538 WARN L227 SmtUtils]: Spent 33.34s on a formula simplification. DAG size of input: 2040 DAG size of output: 1113 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-21 00:39:53,541 INFO L354 Elim1Store]: treesize reduction 3330, result has 33.3 percent of original size [2021-11-21 00:39:53,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 188 select indices, 188 select index equivalence classes, 17393 disjoint index pairs (out of 17578 index pairs), introduced 188 new quantified variables, introduced 370 case distinctions, treesize of input 947 treesize of output 2245 [2021-11-21 00:40:25,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 204 treesize of output 169 [2021-11-21 00:40:30,262 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 29 select indices, 29 select index equivalence classes, 435 disjoint index pairs (out of 406 index pairs), introduced 29 new quantified variables, introduced 0 case distinctions, treesize of input 1065 treesize of output 911 [2021-11-21 00:40:46,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 208 treesize of output 173 [2021-11-21 00:40:48,653 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 174 [2021-11-21 00:40:48,781 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 174 [2021-11-21 00:40:55,067 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 174 [2021-11-21 00:41:03,467 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 174 [2021-11-21 00:41:05,342 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 174 [2021-11-21 00:41:05,455 INFO L197 IcfgInterpreter]: Interpreting procedure mempool_create_kmalloc_pool with input of size 246 for LOIs [2021-11-21 00:41:22,597 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_malloc with input of size 243 for LOIs [2021-11-21 00:41:28,362 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:41:40,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1944552685] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:41:40,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-21 00:41:40,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [7, 21] total 36 [2021-11-21 00:41:40,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533165029] [2021-11-21 00:41:40,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:41:40,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-21 00:41:40,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:41:40,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-21 00:41:40,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1474, Unknown=10, NotChecked=0, Total=1640 [2021-11-21 00:41:40,643 INFO L87 Difference]: Start difference. First operand 1801 states and 2535 transitions. Second operand has 11 states, 9 states have (on average 10.222222222222221) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-21 00:41:58,272 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:42:03,694 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-21 00:42:06,510 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:42:08,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:42:08,997 INFO L93 Difference]: Finished difference Result 3608 states and 5077 transitions. [2021-11-21 00:42:08,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-21 00:42:08,998 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 10.222222222222221) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 157 [2021-11-21 00:42:08,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:42:09,014 INFO L225 Difference]: With dead ends: 3608 [2021-11-21 00:42:09,014 INFO L226 Difference]: Without dead ends: 1805 [2021-11-21 00:42:09,023 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 381 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 73.5s TimeCoverageRelationStatistics Valid=170, Invalid=1626, Unknown=10, NotChecked=0, Total=1806 [2021-11-21 00:42:09,024 INFO L933 BasicCegarLoop]: 1136 mSDtfsCounter, 6 mSDsluCounter, 7276 mSDsCounter, 0 mSdLazyCounter, 2746 mSolverCounterSat, 4 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 7668 SdHoareTripleChecker+Invalid, 2753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2746 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:42:09,024 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 7668 Invalid, 2753 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 2746 Invalid, 3 Unknown, 0 Unchecked, 23.3s Time] [2021-11-21 00:42:09,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1805 states. [2021-11-21 00:42:09,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1805 to 1805. [2021-11-21 00:42:09,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1805 states, 1169 states have (on average 1.3455945252352437) internal successors, (1573), 1200 states have internal predecessors, (1573), 482 states have call successors, (482), 155 states have call predecessors, (482), 153 states have return successors, (485), 473 states have call predecessors, (485), 480 states have call successors, (485) [2021-11-21 00:42:09,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1805 states to 1805 states and 2540 transitions. [2021-11-21 00:42:09,131 INFO L78 Accepts]: Start accepts. Automaton has 1805 states and 2540 transitions. Word has length 157 [2021-11-21 00:42:09,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:42:09,131 INFO L470 AbstractCegarLoop]: Abstraction has 1805 states and 2540 transitions. [2021-11-21 00:42:09,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 10.222222222222221) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-21 00:42:09,132 INFO L276 IsEmpty]: Start isEmpty. Operand 1805 states and 2540 transitions. [2021-11-21 00:42:09,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-11-21 00:42:09,137 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:42:09,138 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:42:09,194 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcaa592e-4c8c-49d6-8d6b-609a2227f24a/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-21 00:42:09,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcaa592e-4c8c-49d6-8d6b-609a2227f24a/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:42:09,365 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:42:09,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:42:09,365 INFO L85 PathProgramCache]: Analyzing trace with hash 593184198, now seen corresponding path program 1 times [2021-11-21 00:42:09,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:42:09,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330608667] [2021-11-21 00:42:09,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:42:09,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:42:09,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:42:09,796 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-21 00:42:09,796 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:42:09,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330608667] [2021-11-21 00:42:09,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330608667] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:42:09,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960088300] [2021-11-21 00:42:09,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:42:09,797 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:42:09,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcaa592e-4c8c-49d6-8d6b-609a2227f24a/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:42:09,798 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcaa592e-4c8c-49d6-8d6b-609a2227f24a/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:42:09,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcaa592e-4c8c-49d6-8d6b-609a2227f24a/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-21 00:42:10,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:42:10,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 3120 conjuncts, 117 conjunts are in the unsatisfiable core [2021-11-21 00:42:10,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:42:10,725 INFO L354 Elim1Store]: treesize reduction 16, result has 23.8 percent of original size [2021-11-21 00:42:10,725 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-21 00:42:10,741 INFO L354 Elim1Store]: treesize reduction 16, result has 23.8 percent of original size [2021-11-21 00:42:10,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 33 [2021-11-21 00:42:10,786 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 00:42:10,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-21 00:42:17,172 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 12