./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-usb-catc.ko.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d536852d-ceaa-4901-8bf4-8cc785eeedd2/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d536852d-ceaa-4901-8bf4-8cc785eeedd2/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d536852d-ceaa-4901-8bf4-8cc785eeedd2/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d536852d-ceaa-4901-8bf4-8cc785eeedd2/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-usb-catc.ko.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d536852d-ceaa-4901-8bf4-8cc785eeedd2/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d536852d-ceaa-4901-8bf4-8cc785eeedd2/bin/utaipan-g80aRyZoba --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 70a2ace6fc40caa55e586c636402c0a5dfab1c8b77b7cf0fdf6a2120173a773c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 02:11:02,066 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:11:02,070 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:11:02,122 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:11:02,124 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:11:02,129 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:11:02,132 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:11:02,136 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:11:02,139 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:11:02,146 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:11:02,148 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:11:02,150 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:11:02,152 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:11:02,154 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:11:02,156 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:11:02,159 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:11:02,162 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:11:02,163 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:11:02,165 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:11:02,174 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:11:02,176 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:11:02,178 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:11:02,180 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:11:02,181 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:11:02,195 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:11:02,195 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:11:02,196 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:11:02,198 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:11:02,199 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:11:02,200 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:11:02,201 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:11:02,202 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:11:02,204 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:11:02,207 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:11:02,208 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:11:02,208 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:11:02,209 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:11:02,210 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:11:02,210 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:11:02,211 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:11:02,212 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:11:02,214 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d536852d-ceaa-4901-8bf4-8cc785eeedd2/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 02:11:02,266 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:11:02,266 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:11:02,267 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:11:02,267 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:11:02,268 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:11:02,269 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:11:02,269 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:11:02,270 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:11:02,270 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:11:02,270 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:11:02,272 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:11:02,272 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:11:02,273 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:11:02,273 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:11:02,274 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:11:02,274 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:11:02,274 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:11:02,275 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:11:02,276 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:11:02,276 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:11:02,277 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:11:02,277 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:11:02,277 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:11:02,278 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:11:02,278 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:11:02,278 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:11:02,279 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:11:02,280 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:11:02,280 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:11:02,281 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:11:02,281 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:11:02,282 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:11:02,282 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:11:02,283 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:11:02,283 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:11:02,283 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:11:02,284 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:11:02,284 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:11:02,284 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_d536852d-ceaa-4901-8bf4-8cc785eeedd2/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d536852d-ceaa-4901-8bf4-8cc785eeedd2/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 70a2ace6fc40caa55e586c636402c0a5dfab1c8b77b7cf0fdf6a2120173a773c [2022-11-22 02:11:02,699 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:11:02,743 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:11:02,746 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:11:02,747 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:11:02,748 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:11:02,749 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d536852d-ceaa-4901-8bf4-8cc785eeedd2/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-usb-catc.ko.cil.out.i [2022-11-22 02:11:06,333 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:11:06,929 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:11:06,930 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d536852d-ceaa-4901-8bf4-8cc785eeedd2/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-usb-catc.ko.cil.out.i [2022-11-22 02:11:07,008 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d536852d-ceaa-4901-8bf4-8cc785eeedd2/bin/utaipan-g80aRyZoba/data/b8df52d67/e2c5b4af946f49eead2219d3ab41a000/FLAG9bd538c9c [2022-11-22 02:11:07,029 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d536852d-ceaa-4901-8bf4-8cc785eeedd2/bin/utaipan-g80aRyZoba/data/b8df52d67/e2c5b4af946f49eead2219d3ab41a000 [2022-11-22 02:11:07,033 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:11:07,035 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:11:07,039 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:11:07,039 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:11:07,044 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:11:07,045 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:11:07" (1/1) ... [2022-11-22 02:11:07,047 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f48336b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:07, skipping insertion in model container [2022-11-22 02:11:07,047 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:11:07" (1/1) ... [2022-11-22 02:11:07,057 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:11:07,187 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:11:08,780 WARN L237 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_d536852d-ceaa-4901-8bf4-8cc785eeedd2/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-usb-catc.ko.cil.out.i[199632,199645] [2022-11-22 02:11:08,857 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:11:08,970 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:11:09,242 WARN L237 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_d536852d-ceaa-4901-8bf4-8cc785eeedd2/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-usb-catc.ko.cil.out.i[199632,199645] [2022-11-22 02:11:09,263 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:11:09,848 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:11:09,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:09 WrapperNode [2022-11-22 02:11:09,849 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:11:09,851 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:11:09,851 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:11:09,852 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:11:09,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:09" (1/1) ... [2022-11-22 02:11:09,962 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:09" (1/1) ... [2022-11-22 02:11:10,091 INFO L138 Inliner]: procedures = 142, calls = 839, calls flagged for inlining = 59, calls inlined = 40, statements flattened = 1682 [2022-11-22 02:11:10,093 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:11:10,095 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:11:10,096 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:11:10,097 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:11:10,108 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:09" (1/1) ... [2022-11-22 02:11:10,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:09" (1/1) ... [2022-11-22 02:11:10,137 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:09" (1/1) ... [2022-11-22 02:11:10,137 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:09" (1/1) ... [2022-11-22 02:11:10,232 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:09" (1/1) ... [2022-11-22 02:11:10,246 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:09" (1/1) ... [2022-11-22 02:11:10,258 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:09" (1/1) ... [2022-11-22 02:11:10,267 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:09" (1/1) ... [2022-11-22 02:11:10,294 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:11:10,295 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:11:10,295 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:11:10,295 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:11:10,296 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:09" (1/1) ... [2022-11-22 02:11:10,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:11:10,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d536852d-ceaa-4901-8bf4-8cc785eeedd2/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:11:10,347 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d536852d-ceaa-4901-8bf4-8cc785eeedd2/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:11:10,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d536852d-ceaa-4901-8bf4-8cc785eeedd2/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:11:10,409 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-22 02:11:10,409 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-22 02:11:10,410 INFO L130 BoogieDeclarations]: Found specification of procedure catc_tx_run [2022-11-22 02:11:10,410 INFO L138 BoogieDeclarations]: Found implementation of procedure catc_tx_run [2022-11-22 02:11:10,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-22 02:11:10,410 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-11-22 02:11:10,410 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-11-22 02:11:10,410 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-22 02:11:10,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-22 02:11:10,411 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 02:11:10,411 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-22 02:11:10,411 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-22 02:11:10,411 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-22 02:11:10,411 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-22 02:11:10,412 INFO L130 BoogieDeclarations]: Found specification of procedure catc_ctrl_run [2022-11-22 02:11:10,412 INFO L138 BoogieDeclarations]: Found implementation of procedure catc_ctrl_run [2022-11-22 02:11:10,412 INFO L130 BoogieDeclarations]: Found specification of procedure catc_get_drvinfo [2022-11-22 02:11:10,412 INFO L138 BoogieDeclarations]: Found implementation of procedure catc_get_drvinfo [2022-11-22 02:11:10,412 INFO L130 BoogieDeclarations]: Found specification of procedure catc_ctrl_msg [2022-11-22 02:11:10,412 INFO L138 BoogieDeclarations]: Found implementation of procedure catc_ctrl_msg [2022-11-22 02:11:10,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-22 02:11:10,413 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-22 02:11:10,413 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-22 02:11:10,413 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-22 02:11:10,414 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-22 02:11:10,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-22 02:11:10,415 INFO L130 BoogieDeclarations]: Found specification of procedure catc_multicast [2022-11-22 02:11:10,415 INFO L138 BoogieDeclarations]: Found implementation of procedure catc_multicast [2022-11-22 02:11:10,416 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-11-22 02:11:10,416 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-11-22 02:11:10,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 02:11:10,417 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2022-11-22 02:11:10,417 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2022-11-22 02:11:10,417 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume_stop [2022-11-22 02:11:10,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume_stop [2022-11-22 02:11:10,417 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2022-11-22 02:11:10,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2022-11-22 02:11:10,418 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-22 02:11:10,418 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-22 02:11:10,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-22 02:11:10,418 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-22 02:11:10,418 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-22 02:11:10,419 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-22 02:11:10,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 02:11:10,419 INFO L130 BoogieDeclarations]: Found specification of procedure crc32_le [2022-11-22 02:11:10,419 INFO L138 BoogieDeclarations]: Found implementation of procedure crc32_le [2022-11-22 02:11:10,419 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-22 02:11:10,419 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-22 02:11:10,419 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-22 02:11:10,420 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-22 02:11:10,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 02:11:10,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 02:11:10,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 02:11:10,422 INFO L130 BoogieDeclarations]: Found specification of procedure catc_ctrl_async [2022-11-22 02:11:10,422 INFO L138 BoogieDeclarations]: Found implementation of procedure catc_ctrl_async [2022-11-22 02:11:10,422 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 02:11:10,423 INFO L130 BoogieDeclarations]: Found specification of procedure catc_exit [2022-11-22 02:11:10,423 INFO L138 BoogieDeclarations]: Found implementation of procedure catc_exit [2022-11-22 02:11:10,424 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-22 02:11:10,424 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-22 02:11:10,424 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-11-22 02:11:10,424 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-11-22 02:11:10,424 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-22 02:11:10,424 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-22 02:11:10,425 INFO L130 BoogieDeclarations]: Found specification of procedure catc_init [2022-11-22 02:11:10,425 INFO L138 BoogieDeclarations]: Found implementation of procedure catc_init [2022-11-22 02:11:10,425 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2022-11-22 02:11:10,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2022-11-22 02:11:10,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 02:11:10,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-22 02:11:10,425 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-11-22 02:11:10,426 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-11-22 02:11:10,426 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-22 02:11:10,426 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-22 02:11:10,427 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-22 02:11:10,428 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-22 02:11:10,428 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-11-22 02:11:10,473 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-11-22 02:11:10,473 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-22 02:11:10,473 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-22 02:11:10,473 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undefined_pointer [2022-11-22 02:11:10,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undefined_pointer [2022-11-22 02:11:10,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 02:11:10,474 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-11-22 02:11:10,474 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-11-22 02:11:10,474 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-22 02:11:10,474 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2022-11-22 02:11:10,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:11:10,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:11:11,132 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:11:11,136 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:11:12,298 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_assume_stopFINAL: assume true; [2022-11-22 02:11:12,423 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-22 02:11:12,446 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-22 02:11:13,992 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##191: assume false; [2022-11-22 02:11:13,992 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##192: assume !false; [2022-11-22 02:11:13,993 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume !false; [2022-11-22 02:11:13,993 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##37: assume false; [2022-11-22 02:11:14,086 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:11:14,748 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:11:14,751 INFO L300 CfgBuilder]: Removed 30 assume(true) statements. [2022-11-22 02:11:14,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:11:14 BoogieIcfgContainer [2022-11-22 02:11:14,757 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:11:14,760 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:11:14,760 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:11:14,764 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:11:14,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:11:07" (1/3) ... [2022-11-22 02:11:14,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@644c9ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:11:14, skipping insertion in model container [2022-11-22 02:11:14,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:09" (2/3) ... [2022-11-22 02:11:14,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@644c9ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:11:14, skipping insertion in model container [2022-11-22 02:11:14,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:11:14" (3/3) ... [2022-11-22 02:11:14,774 INFO L112 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-net-usb-catc.ko.cil.out.i [2022-11-22 02:11:14,796 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:11:14,797 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 02:11:14,897 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:11:14,906 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@20db646a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:11:14,907 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 02:11:14,915 INFO L276 IsEmpty]: Start isEmpty. Operand has 405 states, 246 states have (on average 1.3170731707317074) internal successors, (324), 259 states have internal predecessors, (324), 122 states have call successors, (122), 36 states have call predecessors, (122), 35 states have return successors, (121), 120 states have call predecessors, (121), 121 states have call successors, (121) [2022-11-22 02:11:14,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-22 02:11:14,926 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:11:14,927 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:11:14,927 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:11:14,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:11:14,934 INFO L85 PathProgramCache]: Analyzing trace with hash 275245242, now seen corresponding path program 1 times [2022-11-22 02:11:14,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:11:14,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000393983] [2022-11-22 02:11:14,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:11:14,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:11:15,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:11:15,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:11:15,822 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:11:15,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000393983] [2022-11-22 02:11:15,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000393983] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:11:15,825 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:11:15,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:11:15,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887666856] [2022-11-22 02:11:15,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:11:15,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:11:15,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:11:15,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:11:15,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:11:15,911 INFO L87 Difference]: Start difference. First operand has 405 states, 246 states have (on average 1.3170731707317074) internal successors, (324), 259 states have internal predecessors, (324), 122 states have call successors, (122), 36 states have call predecessors, (122), 35 states have return successors, (121), 120 states have call predecessors, (121), 121 states have call successors, (121) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-22 02:11:18,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:11:20,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:11:20,562 INFO L93 Difference]: Finished difference Result 1082 states and 1544 transitions. [2022-11-22 02:11:20,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:11:20,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2022-11-22 02:11:20,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:11:20,585 INFO L225 Difference]: With dead ends: 1082 [2022-11-22 02:11:20,585 INFO L226 Difference]: Without dead ends: 677 [2022-11-22 02:11:20,593 INFO L412 NwaCegarLoop]: 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 [2022-11-22 02:11:20,597 INFO L413 NwaCegarLoop]: 539 mSDtfsCounter, 372 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 28 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 995 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:11:20,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 995 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 161 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2022-11-22 02:11:20,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2022-11-22 02:11:20,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 672. [2022-11-22 02:11:20,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 413 states have (on average 1.2590799031476998) internal successors, (520), 428 states have internal predecessors, (520), 194 states have call successors, (194), 66 states have call predecessors, (194), 64 states have return successors, (191), 186 states have call predecessors, (191), 191 states have call successors, (191) [2022-11-22 02:11:20,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 905 transitions. [2022-11-22 02:11:20,720 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 905 transitions. Word has length 10 [2022-11-22 02:11:20,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:11:20,721 INFO L495 AbstractCegarLoop]: Abstraction has 672 states and 905 transitions. [2022-11-22 02:11:20,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-22 02:11:20,722 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 905 transitions. [2022-11-22 02:11:20,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-22 02:11:20,722 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:11:20,723 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:11:20,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 02:11:20,723 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:11:20,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:11:20,724 INFO L85 PathProgramCache]: Analyzing trace with hash -57591555, now seen corresponding path program 1 times [2022-11-22 02:11:20,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:11:20,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345792619] [2022-11-22 02:11:20,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:11:20,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:11:20,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:11:20,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:11:20,892 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:11:20,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345792619] [2022-11-22 02:11:20,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345792619] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:11:20,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:11:20,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:11:20,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103608880] [2022-11-22 02:11:20,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:11:20,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:11:20,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:11:20,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:11:20,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:11:20,906 INFO L87 Difference]: Start difference. First operand 672 states and 905 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-22 02:11:22,935 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:11:24,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:11:24,627 INFO L93 Difference]: Finished difference Result 674 states and 906 transitions. [2022-11-22 02:11:24,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:11:24,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-11-22 02:11:24,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:11:24,639 INFO L225 Difference]: With dead ends: 674 [2022-11-22 02:11:24,639 INFO L226 Difference]: Without dead ends: 665 [2022-11-22 02:11:24,640 INFO L412 NwaCegarLoop]: 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 [2022-11-22 02:11:24,644 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 535 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 535 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-22 02:11:24,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [535 Valid, 462 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-22 02:11:24,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2022-11-22 02:11:24,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 665. [2022-11-22 02:11:24,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 665 states, 409 states have (on average 1.2469437652811737) internal successors, (510), 422 states have internal predecessors, (510), 192 states have call successors, (192), 65 states have call predecessors, (192), 63 states have return successors, (190), 185 states have call predecessors, (190), 190 states have call successors, (190) [2022-11-22 02:11:24,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 892 transitions. [2022-11-22 02:11:24,743 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 892 transitions. Word has length 11 [2022-11-22 02:11:24,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:11:24,743 INFO L495 AbstractCegarLoop]: Abstraction has 665 states and 892 transitions. [2022-11-22 02:11:24,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-22 02:11:24,744 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 892 transitions. [2022-11-22 02:11:24,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-22 02:11:24,747 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:11:24,748 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:11:24,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 02:11:24,748 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:11:24,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:11:24,761 INFO L85 PathProgramCache]: Analyzing trace with hash 953717786, now seen corresponding path program 1 times [2022-11-22 02:11:24,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:11:24,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102028762] [2022-11-22 02:11:24,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:11:24,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:11:24,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:11:25,142 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 02:11:25,143 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:11:25,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102028762] [2022-11-22 02:11:25,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102028762] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:11:25,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:11:25,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:11:25,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887783519] [2022-11-22 02:11:25,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:11:25,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:11:25,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:11:25,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:11:25,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:11:25,154 INFO L87 Difference]: Start difference. First operand 665 states and 892 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-22 02:11:27,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:11:30,067 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:11:30,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:11:30,679 INFO L93 Difference]: Finished difference Result 1334 states and 1796 transitions. [2022-11-22 02:11:30,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:11:30,681 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 26 [2022-11-22 02:11:30,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:11:30,688 INFO L225 Difference]: With dead ends: 1334 [2022-11-22 02:11:30,688 INFO L226 Difference]: Without dead ends: 937 [2022-11-22 02:11:30,691 INFO L412 NwaCegarLoop]: 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 [2022-11-22 02:11:30,692 INFO L413 NwaCegarLoop]: 532 mSDtfsCounter, 353 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 985 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:11:30,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 985 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-11-22 02:11:30,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2022-11-22 02:11:30,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 666. [2022-11-22 02:11:30,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 410 states have (on average 1.2463414634146341) internal successors, (511), 422 states have internal predecessors, (511), 192 states have call successors, (192), 65 states have call predecessors, (192), 63 states have return successors, (190), 186 states have call predecessors, (190), 190 states have call successors, (190) [2022-11-22 02:11:30,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 893 transitions. [2022-11-22 02:11:30,747 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 893 transitions. Word has length 26 [2022-11-22 02:11:30,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:11:30,748 INFO L495 AbstractCegarLoop]: Abstraction has 666 states and 893 transitions. [2022-11-22 02:11:30,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-22 02:11:30,749 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 893 transitions. [2022-11-22 02:11:30,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-22 02:11:30,751 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:11:30,752 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:11:30,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 02:11:30,752 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:11:30,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:11:30,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1647487605, now seen corresponding path program 1 times [2022-11-22 02:11:30,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:11:30,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012677818] [2022-11-22 02:11:30,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:11:30,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:11:30,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:11:31,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:11:31,067 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:11:31,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012677818] [2022-11-22 02:11:31,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012677818] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:11:31,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:11:31,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:11:31,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835962986] [2022-11-22 02:11:31,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:11:31,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:11:31,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:11:31,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:11:31,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:11:31,071 INFO L87 Difference]: Start difference. First operand 666 states and 893 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-22 02:11:34,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:11:35,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:11:35,215 INFO L93 Difference]: Finished difference Result 1578 states and 2178 transitions. [2022-11-22 02:11:35,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:11:35,216 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 35 [2022-11-22 02:11:35,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:11:35,223 INFO L225 Difference]: With dead ends: 1578 [2022-11-22 02:11:35,223 INFO L226 Difference]: Without dead ends: 917 [2022-11-22 02:11:35,226 INFO L412 NwaCegarLoop]: 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 [2022-11-22 02:11:35,227 INFO L413 NwaCegarLoop]: 566 mSDtfsCounter, 185 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 930 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:11:35,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 930 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-22 02:11:35,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 917 states. [2022-11-22 02:11:35,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 917 to 913. [2022-11-22 02:11:35,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 913 states, 575 states have (on average 1.2747826086956522) internal successors, (733), 595 states have internal predecessors, (733), 274 states have call successors, (274), 65 states have call predecessors, (274), 63 states have return successors, (272), 266 states have call predecessors, (272), 272 states have call successors, (272) [2022-11-22 02:11:35,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 1279 transitions. [2022-11-22 02:11:35,300 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 1279 transitions. Word has length 35 [2022-11-22 02:11:35,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:11:35,301 INFO L495 AbstractCegarLoop]: Abstraction has 913 states and 1279 transitions. [2022-11-22 02:11:35,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-22 02:11:35,301 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 1279 transitions. [2022-11-22 02:11:35,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-22 02:11:35,306 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:11:35,306 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 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] [2022-11-22 02:11:35,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 02:11:35,307 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:11:35,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:11:35,308 INFO L85 PathProgramCache]: Analyzing trace with hash 2000378301, now seen corresponding path program 1 times [2022-11-22 02:11:35,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:11:35,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421356576] [2022-11-22 02:11:35,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:11:35,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:11:35,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:11:35,560 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:11:35,560 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:11:35,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421356576] [2022-11-22 02:11:35,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421356576] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:11:35,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:11:35,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 02:11:35,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291019334] [2022-11-22 02:11:35,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:11:35,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:11:35,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:11:35,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:11:35,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:11:35,564 INFO L87 Difference]: Start difference. First operand 913 states and 1279 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-22 02:11:37,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:11:38,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:11:42,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:11:42,241 INFO L93 Difference]: Finished difference Result 1685 states and 2339 transitions. [2022-11-22 02:11:42,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:11:42,242 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 53 [2022-11-22 02:11:42,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:11:42,247 INFO L225 Difference]: With dead ends: 1685 [2022-11-22 02:11:42,248 INFO L226 Difference]: Without dead ends: 773 [2022-11-22 02:11:42,251 INFO L412 NwaCegarLoop]: 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 [2022-11-22 02:11:42,253 INFO L413 NwaCegarLoop]: 459 mSDtfsCounter, 11 mSDsluCounter, 912 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1371 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-11-22 02:11:42,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1371 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2022-11-22 02:11:42,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2022-11-22 02:11:42,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 765. [2022-11-22 02:11:42,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 765 states, 477 states have (on average 1.259958071278826) internal successors, (601), 493 states have internal predecessors, (601), 226 states have call successors, (226), 63 states have call predecessors, (226), 61 states have return successors, (224), 219 states have call predecessors, (224), 224 states have call successors, (224) [2022-11-22 02:11:42,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 1051 transitions. [2022-11-22 02:11:42,358 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 1051 transitions. Word has length 53 [2022-11-22 02:11:42,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:11:42,359 INFO L495 AbstractCegarLoop]: Abstraction has 765 states and 1051 transitions. [2022-11-22 02:11:42,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-22 02:11:42,359 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 1051 transitions. [2022-11-22 02:11:42,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-22 02:11:42,368 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:11:42,369 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-22 02:11:42,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 02:11:42,370 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:11:42,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:11:42,370 INFO L85 PathProgramCache]: Analyzing trace with hash -817177854, now seen corresponding path program 1 times [2022-11-22 02:11:42,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:11:42,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747765818] [2022-11-22 02:11:42,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:11:42,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:11:42,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:11:43,410 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-22 02:11:43,410 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:11:43,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747765818] [2022-11-22 02:11:43,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747765818] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:11:43,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:11:43,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 02:11:43,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726221534] [2022-11-22 02:11:43,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:11:43,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 02:11:43,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:11:43,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 02:11:43,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:11:43,415 INFO L87 Difference]: Start difference. First operand 765 states and 1051 transitions. Second operand has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-22 02:11:45,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:11:46,575 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:11:47,663 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:11:48,861 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:11:51,033 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:11:57,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:11:57,581 INFO L93 Difference]: Finished difference Result 805 states and 1106 transitions. [2022-11-22 02:11:57,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 02:11:57,582 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 109 [2022-11-22 02:11:57,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:11:57,587 INFO L225 Difference]: With dead ends: 805 [2022-11-22 02:11:57,587 INFO L226 Difference]: Without dead ends: 767 [2022-11-22 02:11:57,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-22 02:11:57,589 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 4 mSDsluCounter, 2108 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2564 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:11:57,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2564 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 14.0s Time] [2022-11-22 02:11:57,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2022-11-22 02:11:57,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 765. [2022-11-22 02:11:57,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 765 states, 477 states have (on average 1.2578616352201257) internal successors, (600), 493 states have internal predecessors, (600), 226 states have call successors, (226), 63 states have call predecessors, (226), 61 states have return successors, (224), 219 states have call predecessors, (224), 224 states have call successors, (224) [2022-11-22 02:11:57,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 1050 transitions. [2022-11-22 02:11:57,639 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 1050 transitions. Word has length 109 [2022-11-22 02:11:57,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:11:57,640 INFO L495 AbstractCegarLoop]: Abstraction has 765 states and 1050 transitions. [2022-11-22 02:11:57,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-22 02:11:57,640 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 1050 transitions. [2022-11-22 02:11:57,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-22 02:11:57,643 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:11:57,643 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-22 02:11:57,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 02:11:57,644 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:11:57,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:11:57,644 INFO L85 PathProgramCache]: Analyzing trace with hash -96327092, now seen corresponding path program 1 times [2022-11-22 02:11:57,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:11:57,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064299534] [2022-11-22 02:11:57,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:11:57,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:11:57,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:12:03,206 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-22 02:12:03,207 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:12:03,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064299534] [2022-11-22 02:12:03,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064299534] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:12:03,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687233442] [2022-11-22 02:12:03,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:12:03,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:12:03,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d536852d-ceaa-4901-8bf4-8cc785eeedd2/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:12:03,212 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d536852d-ceaa-4901-8bf4-8cc785eeedd2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:12:03,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d536852d-ceaa-4901-8bf4-8cc785eeedd2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 02:12:04,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:12:04,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 1827 conjuncts, 112 conjunts are in the unsatisfiable core [2022-11-22 02:12:04,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:12:04,988 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-22 02:12:04,996 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-22 02:12:05,483 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2022-11-22 02:12:05,489 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 43 [2022-11-22 02:12:05,655 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-22 02:12:06,451 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 79 [2022-11-22 02:12:06,457 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 85 [2022-11-22 02:12:07,000 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-22 02:12:08,399 INFO L350 Elim1Store]: Elim1 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 176 treesize of output 172 [2022-11-22 02:12:08,409 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 02:12:08,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 200 treesize of output 178 [2022-11-22 02:12:09,853 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 253 treesize of output 199 [2022-11-22 02:12:09,865 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 02:12:09,865 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 211 treesize of output 115 [2022-11-22 02:12:10,233 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 55 proven. 14 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-22 02:12:10,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:12:12,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-22 02:12:13,432 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-22 02:12:13,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687233442] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:12:13,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1545621405] [2022-11-22 02:12:13,494 INFO L159 IcfgInterpreter]: Started Sifa with 72 locations of interest [2022-11-22 02:12:13,495 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:12:13,500 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:12:13,507 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:12:13,508 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:12:15,139 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 121 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 61 [2022-11-22 02:12:15,618 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1774 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 266 [2022-11-22 02:12:16,144 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1055 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 123 treesize of output 201 [2022-11-22 02:12:36,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:12:36,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:12:36,593 INFO L217 Elim1Store]: Index analysis took 140 ms [2022-11-22 02:12:39,859 INFO L321 Elim1Store]: treesize reduction 1162, result has 25.4 percent of original size [2022-11-22 02:12:39,860 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 34 select indices, 34 select index equivalence classes, 500 disjoint index pairs (out of 561 index pairs), introduced 34 new quantified variables, introduced 93 case distinctions, treesize of input 184 treesize of output 517 [2022-11-22 02:12:40,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:12:40,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:12:40,527 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 31 select indices, 31 select index equivalence classes, 530 disjoint index pairs (out of 465 index pairs), introduced 31 new quantified variables, introduced 0 case distinctions, treesize of input 165 treesize of output 259 [2022-11-22 02:12:45,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-22 02:12:45,436 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-22 02:12:47,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:12:48,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:12:48,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 34 select indices, 34 select index equivalence classes, 561 disjoint index pairs (out of 561 index pairs), introduced 34 new quantified variables, introduced 0 case distinctions, treesize of input 171 treesize of output 103 [2022-11-22 02:12:48,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:12:48,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:12:48,466 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 33 select indices, 33 select index equivalence classes, 530 disjoint index pairs (out of 528 index pairs), introduced 33 new quantified variables, introduced 0 case distinctions, treesize of input 166 treesize of output 100 [2022-11-22 02:12:53,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:12:53,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:12:53,949 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 34 select indices, 34 select index equivalence classes, 561 disjoint index pairs (out of 561 index pairs), introduced 34 new quantified variables, introduced 0 case distinctions, treesize of input 171 treesize of output 103 [2022-11-22 02:12:54,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:12:54,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:12:54,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 33 select indices, 33 select index equivalence classes, 530 disjoint index pairs (out of 528 index pairs), introduced 33 new quantified variables, introduced 0 case distinctions, treesize of input 166 treesize of output 100 [2022-11-22 02:16:19,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:16:19,931 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:16:20,044 INFO L321 Elim1Store]: treesize reduction 165, result has 28.9 percent of original size [2022-11-22 02:16:20,045 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 83 [2022-11-22 02:16:20,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:16:20,206 INFO L321 Elim1Store]: treesize reduction 147, result has 36.6 percent of original size [2022-11-22 02:16:20,207 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 101 [2022-11-22 02:16:20,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:16:20,375 INFO L321 Elim1Store]: treesize reduction 159, result has 34.8 percent of original size [2022-11-22 02:16:20,375 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 94 [2022-11-22 02:16:22,728 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2022-11-22 02:16:22,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2022-11-22 02:16:22,796 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 11 [2022-11-22 02:16:23,358 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-22 02:16:23,385 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-22 02:16:23,411 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-22 02:16:24,089 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-22 02:16:24,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-22 02:16:24,157 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-22 02:16:24,820 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-22 02:16:24,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-22 02:16:24,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-22 02:16:25,569 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-22 02:16:25,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-22 02:16:25,659 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-22 02:17:51,213 INFO L197 IcfgInterpreter]: Interpreting procedure usb_free_urb with input of size 118 for LOIs [2022-11-22 02:17:51,587 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_blast_assert with input of size 125 for LOIs [2022-11-22 02:17:51,652 INFO L197 IcfgInterpreter]: Interpreting procedure spinlock_check with input of size 85 for LOIs [2022-11-22 02:17:51,666 INFO L197 IcfgInterpreter]: Interpreting procedure __raw_spin_lock_init with input of size 116 for LOIs [2022-11-22 02:17:51,782 INFO L197 IcfgInterpreter]: Interpreting procedure catc_init with input of size 1462 for LOIs [2022-11-22 02:17:52,846 INFO L197 IcfgInterpreter]: Interpreting procedure usb_alloc_urb with input of size 135 for LOIs [2022-11-22 02:17:54,421 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_undefined_pointer with input of size 119 for LOIs [2022-11-22 02:17:55,098 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_malloc with input of size 86 for LOIs [2022-11-22 02:17:55,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-22 02:17:55,151 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-22 02:17:55,165 INFO L197 IcfgInterpreter]: Interpreting procedure netdev_priv with input of size 1401 for LOIs [2022-11-22 02:18:00,649 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:18:24,746 WARN L233 SmtUtils]: Spent 17.97s on a formula simplification that was a NOOP. DAG size: 1462 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:19:04,719 WARN L233 SmtUtils]: Spent 38.54s on a formula simplification. DAG size of input: 1515 DAG size of output: 1512 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:19:24,389 WARN L233 SmtUtils]: Spent 17.96s on a formula simplification that was a NOOP. DAG size: 1468 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:19:44,208 WARN L233 SmtUtils]: Spent 18.31s on a formula simplification that was a NOOP. DAG size: 1468 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:20:04,333 WARN L233 SmtUtils]: Spent 18.27s on a formula simplification that was a NOOP. DAG size: 1468 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:20:24,464 WARN L233 SmtUtils]: Spent 18.45s on a formula simplification that was a NOOP. DAG size: 1474 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:20:46,761 WARN L233 SmtUtils]: Spent 18.53s on a formula simplification that was a NOOP. DAG size: 1476 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:21:07,251 WARN L233 SmtUtils]: Spent 18.68s on a formula simplification that was a NOOP. DAG size: 1480 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:21:27,829 WARN L233 SmtUtils]: Spent 18.72s on a formula simplification that was a NOOP. DAG size: 1482 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:21:48,592 WARN L233 SmtUtils]: Spent 18.80s on a formula simplification that was a NOOP. DAG size: 1484 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:22:09,596 WARN L233 SmtUtils]: Spent 19.02s on a formula simplification that was a NOOP. DAG size: 1486 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:22:30,583 WARN L233 SmtUtils]: Spent 19.02s on a formula simplification that was a NOOP. DAG size: 1488 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:22:50,632 WARN L233 SmtUtils]: Spent 17.93s on a formula simplification that was a NOOP. DAG size: 1490 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:23:12,212 WARN L233 SmtUtils]: Spent 19.45s on a formula simplification that was a NOOP. DAG size: 1492 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:23:34,403 WARN L233 SmtUtils]: Spent 19.97s on a formula simplification that was a NOOP. DAG size: 1494 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:23:58,155 WARN L233 SmtUtils]: Spent 19.51s on a formula simplification that was a NOOP. DAG size: 1478 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:24:54,246 WARN L233 SmtUtils]: Spent 53.34s on a formula simplification. DAG size of input: 1705 DAG size of output: 1576 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)