./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d06f62a-d19f-43a7-88eb-ff4ef113a6f2/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d06f62a-d19f-43a7-88eb-ff4ef113a6f2/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d06f62a-d19f-43a7-88eb-ff4ef113a6f2/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d06f62a-d19f-43a7-88eb-ff4ef113a6f2/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d06f62a-d19f-43a7-88eb-ff4ef113a6f2/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d06f62a-d19f-43a7-88eb-ff4ef113a6f2/bin/utaipan-EQgc7hIp5V --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 a49fa2cb2318ea112688f7105056cfdc1f55c42e8f926c44139a3fa1f7774bac --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:51:31,386 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:51:31,388 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:51:31,427 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:51:31,428 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:51:31,432 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:51:31,433 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:51:31,436 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:51:31,438 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:51:31,440 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:51:31,441 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:51:31,443 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:51:31,444 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:51:31,445 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:51:31,447 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:51:31,449 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:51:31,450 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:51:31,451 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:51:31,454 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:51:31,457 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:51:31,459 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:51:31,461 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:51:31,463 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:51:31,464 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:51:31,468 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:51:31,468 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:51:31,469 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:51:31,470 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:51:31,471 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:51:31,472 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:51:31,473 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:51:31,474 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:51:31,475 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:51:31,476 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:51:31,477 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:51:31,477 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:51:31,478 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:51:31,479 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:51:31,479 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:51:31,481 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:51:31,482 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:51:31,483 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d06f62a-d19f-43a7-88eb-ff4ef113a6f2/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 02:51:31,510 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:51:31,511 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:51:31,511 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:51:31,512 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:51:31,513 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:51:31,513 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:51:31,513 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:51:31,514 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:51:31,514 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:51:31,515 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:51:31,515 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:51:31,515 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:51:31,516 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:51:31,516 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:51:31,516 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:51:31,517 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:51:31,517 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:51:31,517 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:51:31,518 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:51:31,519 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:51:31,519 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:51:31,519 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:51:31,520 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:51:31,520 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:51:31,520 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:51:31,520 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:51:31,521 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:51:31,521 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:51:31,521 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:51:31,522 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:51:31,522 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:51:31,522 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:51:31,523 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:51:31,523 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:51:31,523 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:51:31,523 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:51:31,524 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:51:31,524 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:51:31,524 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d06f62a-d19f-43a7-88eb-ff4ef113a6f2/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d06f62a-d19f-43a7-88eb-ff4ef113a6f2/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a49fa2cb2318ea112688f7105056cfdc1f55c42e8f926c44139a3fa1f7774bac [2021-11-23 02:51:31,787 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:51:31,808 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:51:31,810 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:51:31,811 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:51:31,812 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:51:31,814 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d06f62a-d19f-43a7-88eb-ff4ef113a6f2/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i [2021-11-23 02:51:31,889 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d06f62a-d19f-43a7-88eb-ff4ef113a6f2/bin/utaipan-EQgc7hIp5V/data/ee164e310/960c9310389d47bdbaf3508edcf57165/FLAG603eb9402 [2021-11-23 02:51:32,977 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:51:32,978 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d06f62a-d19f-43a7-88eb-ff4ef113a6f2/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i [2021-11-23 02:51:33,049 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d06f62a-d19f-43a7-88eb-ff4ef113a6f2/bin/utaipan-EQgc7hIp5V/data/ee164e310/960c9310389d47bdbaf3508edcf57165/FLAG603eb9402 [2021-11-23 02:51:33,287 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d06f62a-d19f-43a7-88eb-ff4ef113a6f2/bin/utaipan-EQgc7hIp5V/data/ee164e310/960c9310389d47bdbaf3508edcf57165 [2021-11-23 02:51:33,290 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:51:33,292 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:51:33,294 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:51:33,294 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:51:33,298 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:51:33,298 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:51:33" (1/1) ... [2021-11-23 02:51:33,300 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76a6e028 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:33, skipping insertion in model container [2021-11-23 02:51:33,300 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:51:33" (1/1) ... [2021-11-23 02:51:33,307 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:51:33,518 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:51:34,988 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d06f62a-d19f-43a7-88eb-ff4ef113a6f2/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i[174455,174468] [2021-11-23 02:51:37,793 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:51:37,935 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:51:38,104 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d06f62a-d19f-43a7-88eb-ff4ef113a6f2/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i[174455,174468] [2021-11-23 02:51:38,709 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:51:39,047 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:51:39,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:39 WrapperNode [2021-11-23 02:51:39,048 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:51:39,049 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:51:39,049 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:51:39,049 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:51:39,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:39" (1/1) ... [2021-11-23 02:51:39,265 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:39" (1/1) ... [2021-11-23 02:51:39,637 INFO L137 Inliner]: procedures = 436, calls = 5982, calls flagged for inlining = 178, calls inlined = 156, statements flattened = 7374 [2021-11-23 02:51:39,638 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:51:39,639 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:51:39,639 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:51:39,639 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:51:39,649 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:39" (1/1) ... [2021-11-23 02:51:39,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:39" (1/1) ... [2021-11-23 02:51:39,682 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:39" (1/1) ... [2021-11-23 02:51:39,683 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:39" (1/1) ... [2021-11-23 02:51:39,839 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:39" (1/1) ... [2021-11-23 02:51:39,975 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:39" (1/1) ... [2021-11-23 02:51:40,027 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:39" (1/1) ... [2021-11-23 02:51:40,112 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:51:40,113 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:51:40,113 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:51:40,113 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:51:40,127 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:39" (1/1) ... [2021-11-23 02:51:40,134 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:51:40,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d06f62a-d19f-43a7-88eb-ff4ef113a6f2/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:51:40,192 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d06f62a-d19f-43a7-88eb-ff4ef113a6f2/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:51:40,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d06f62a-d19f-43a7-88eb-ff4ef113a6f2/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:51:40,331 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_le_to_cpu [2021-11-23 02:51:40,332 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_le_to_cpu [2021-11-23 02:51:40,332 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_eth_tx_timeout [2021-11-23 02:51:40,332 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_eth_tx_timeout [2021-11-23 02:51:40,332 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-23 02:51:40,332 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-23 02:51:40,332 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-23 02:51:40,332 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_trigger [2021-11-23 02:51:40,333 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_trigger [2021-11-23 02:51:40,333 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-23 02:51:40,333 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-23 02:51:40,333 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-23 02:51:40,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-23 02:51:40,333 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2021-11-23 02:51:40,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2021-11-23 02:51:40,334 INFO L130 BoogieDeclarations]: Found specification of procedure prism54_mib_mode_helper [2021-11-23 02:51:40,334 INFO L138 BoogieDeclarations]: Found implementation of procedure prism54_mib_mode_helper [2021-11-23 02:51:40,334 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-23 02:51:40,334 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-23 02:51:40,334 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2021-11-23 02:51:40,334 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2021-11-23 02:51:40,334 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-23 02:51:40,335 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-23 02:51:40,335 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_set_request [2021-11-23 02:51:40,335 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_set_request [2021-11-23 02:51:40,335 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_cpu_to_le [2021-11-23 02:51:40,335 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_cpu_to_le [2021-11-23 02:51:40,335 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_get_state [2021-11-23 02:51:40,335 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_get_state [2021-11-23 02:51:40,336 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-23 02:51:40,336 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-23 02:51:40,336 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-23 02:51:40,336 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-23 02:51:40,336 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-23 02:51:40,336 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-23 02:51:40,336 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_mgt_release [2021-11-23 02:51:40,337 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_mgt_release [2021-11-23 02:51:40,350 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-23 02:51:40,350 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-23 02:51:40,351 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-23 02:51:40,351 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-23 02:51:40,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:51:40,351 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-23 02:51:40,351 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-23 02:51:40,352 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-23 02:51:40,352 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-23 02:51:40,352 INFO L130 BoogieDeclarations]: Found specification of procedure eth_change_mtu [2021-11-23 02:51:40,352 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_change_mtu [2021-11-23 02:51:40,352 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_set [2021-11-23 02:51:40,352 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_set [2021-11-23 02:51:40,353 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-23 02:51:40,353 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-23 02:51:40,353 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-23 02:51:40,353 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-23 02:51:40,353 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 02:51:40,354 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_reset [2021-11-23 02:51:40,354 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_reset [2021-11-23 02:51:40,354 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-23 02:51:40,354 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-23 02:51:40,354 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_from_linear_data [2021-11-23 02:51:40,354 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_from_linear_data [2021-11-23 02:51:40,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 02:51:40,355 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 02:51:40,355 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-23 02:51:40,355 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-23 02:51:40,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-23 02:51:40,356 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-23 02:51:40,356 INFO L130 BoogieDeclarations]: Found specification of procedure prism54_set_mac_address [2021-11-23 02:51:40,356 INFO L138 BoogieDeclarations]: Found implementation of procedure prism54_set_mac_address [2021-11-23 02:51:40,356 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-23 02:51:40,356 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-23 02:51:40,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 02:51:40,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:51:40,357 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-23 02:51:40,357 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-23 02:51:40,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 02:51:40,357 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-23 02:51:40,357 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-23 02:51:40,358 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-23 02:51:40,358 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-23 02:51:40,358 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-23 02:51:40,358 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-23 02:51:40,358 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-23 02:51:40,358 INFO L130 BoogieDeclarations]: Found specification of procedure down_write [2021-11-23 02:51:40,359 INFO L138 BoogieDeclarations]: Found implementation of procedure down_write [2021-11-23 02:51:40,359 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-11-23 02:51:40,359 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-11-23 02:51:40,359 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-23 02:51:40,359 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-23 02:51:40,360 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_uninterruptible [2021-11-23 02:51:40,360 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_uninterruptible [2021-11-23 02:51:40,360 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2021-11-23 02:51:40,360 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2021-11-23 02:51:40,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:51:40,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:51:40,361 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2021-11-23 02:51:40,374 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2021-11-23 02:51:40,374 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_12 [2021-11-23 02:51:40,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_12 [2021-11-23 02:51:40,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2021-11-23 02:51:40,375 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2021-11-23 02:51:40,375 INFO L130 BoogieDeclarations]: Found specification of procedure prism54_clear_mac [2021-11-23 02:51:40,375 INFO L138 BoogieDeclarations]: Found implementation of procedure prism54_clear_mac [2021-11-23 02:51:40,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 02:51:40,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 02:51:40,376 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-23 02:51:40,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-23 02:51:40,376 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-23 02:51:40,376 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-23 02:51:40,376 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-23 02:51:40,377 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-23 02:51:40,377 INFO L130 BoogieDeclarations]: Found specification of procedure prism54_bring_down [2021-11-23 02:51:40,377 INFO L138 BoogieDeclarations]: Found implementation of procedure prism54_bring_down [2021-11-23 02:51:40,377 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible_nested [2021-11-23 02:51:40,377 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible_nested [2021-11-23 02:51:40,378 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-23 02:51:40,378 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-23 02:51:40,378 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-23 02:51:40,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-23 02:51:40,378 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-23 02:51:40,379 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-23 02:51:40,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-23 02:51:40,379 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-23 02:51:40,379 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 02:51:40,379 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 02:51:40,379 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-23 02:51:40,380 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-23 02:51:40,380 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-11-23 02:51:40,380 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-11-23 02:51:40,380 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2021-11-23 02:51:40,380 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2021-11-23 02:51:40,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 02:51:40,381 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-23 02:51:40,381 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-23 02:51:40,381 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_set_state [2021-11-23 02:51:40,381 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_set_state [2021-11-23 02:51:40,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 02:51:40,381 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2021-11-23 02:51:40,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2021-11-23 02:51:40,382 INFO L130 BoogieDeclarations]: Found specification of procedure up_write [2021-11-23 02:51:40,382 INFO L138 BoogieDeclarations]: Found implementation of procedure up_write [2021-11-23 02:51:40,382 INFO L130 BoogieDeclarations]: Found specification of procedure pci_clear_mwi [2021-11-23 02:51:40,382 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_clear_mwi [2021-11-23 02:51:40,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 02:51:40,383 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_byte [2021-11-23 02:51:40,383 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_byte [2021-11-23 02:51:40,383 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-11-23 02:51:40,383 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-11-23 02:51:40,383 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-23 02:51:40,383 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-23 02:51:40,384 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-23 02:51:40,384 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-23 02:51:40,384 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-23 02:51:40,384 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-23 02:51:40,384 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-23 02:51:40,384 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-23 02:51:40,384 INFO L130 BoogieDeclarations]: Found specification of procedure prism54_remove [2021-11-23 02:51:40,385 INFO L138 BoogieDeclarations]: Found implementation of procedure prism54_remove [2021-11-23 02:51:40,385 INFO L130 BoogieDeclarations]: Found specification of procedure isl38xx_w32_flush [2021-11-23 02:51:40,385 INFO L138 BoogieDeclarations]: Found implementation of procedure isl38xx_w32_flush [2021-11-23 02:51:40,385 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-23 02:51:40,385 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-23 02:51:40,385 INFO L130 BoogieDeclarations]: Found specification of procedure release_firmware [2021-11-23 02:51:40,386 INFO L138 BoogieDeclarations]: Found implementation of procedure release_firmware [2021-11-23 02:51:40,386 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-23 02:51:40,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-23 02:51:40,386 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2021-11-23 02:51:40,386 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2021-11-23 02:51:40,386 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_commit_list [2021-11-23 02:51:40,387 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_commit_list [2021-11-23 02:51:40,387 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2021-11-23 02:51:40,387 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2021-11-23 02:51:40,387 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-23 02:51:40,387 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-23 02:51:40,387 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_mgmt_rx_fill [2021-11-23 02:51:40,387 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_mgmt_rx_fill [2021-11-23 02:51:40,388 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_mgt_transaction [2021-11-23 02:51:40,388 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_mgt_transaction [2021-11-23 02:51:40,388 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2021-11-23 02:51:40,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2021-11-23 02:51:40,388 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-23 02:51:40,388 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-23 02:51:40,389 INFO L130 BoogieDeclarations]: Found specification of procedure channel_of_freq [2021-11-23 02:51:40,389 INFO L138 BoogieDeclarations]: Found implementation of procedure channel_of_freq [2021-11-23 02:51:40,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 02:51:40,389 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2021-11-23 02:51:40,389 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2021-11-23 02:51:40,389 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-23 02:51:40,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-23 02:51:40,390 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_free_memory [2021-11-23 02:51:40,390 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_free_memory [2021-11-23 02:51:40,390 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_commit [2021-11-23 02:51:40,390 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_commit [2021-11-23 02:51:40,390 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-11-23 02:51:40,391 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-11-23 02:51:40,391 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-11-23 02:51:40,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-11-23 02:51:40,406 INFO L130 BoogieDeclarations]: Found specification of procedure __swab32s [2021-11-23 02:51:40,406 INFO L138 BoogieDeclarations]: Found implementation of procedure __swab32s [2021-11-23 02:51:40,406 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab64 [2021-11-23 02:51:40,407 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab64 [2021-11-23 02:51:40,407 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-23 02:51:40,407 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-23 02:51:40,407 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2021-11-23 02:51:40,407 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2021-11-23 02:51:40,407 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2021-11-23 02:51:40,407 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2021-11-23 02:51:40,407 INFO L130 BoogieDeclarations]: Found specification of procedure isl38xx_in_queue [2021-11-23 02:51:40,408 INFO L138 BoogieDeclarations]: Found implementation of procedure isl38xx_in_queue [2021-11-23 02:51:40,408 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2021-11-23 02:51:40,408 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2021-11-23 02:51:40,408 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-23 02:51:40,408 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-23 02:51:40,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:51:40,408 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2021-11-23 02:51:40,408 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2021-11-23 02:51:40,409 INFO L130 BoogieDeclarations]: Found specification of procedure isl38xx_disable_interrupts [2021-11-23 02:51:40,409 INFO L138 BoogieDeclarations]: Found implementation of procedure isl38xx_disable_interrupts [2021-11-23 02:51:41,386 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:51:41,395 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:51:41,865 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-23 02:51:49,962 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:51:51,195 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:51:51,195 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-23 02:51:51,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:51:51 BoogieIcfgContainer [2021-11-23 02:51:51,201 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:51:51,203 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:51:51,204 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:51:51,208 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:51:51,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:51:33" (1/3) ... [2021-11-23 02:51:51,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c8fddd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:51:51, skipping insertion in model container [2021-11-23 02:51:51,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:39" (2/3) ... [2021-11-23 02:51:51,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c8fddd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:51:51, skipping insertion in model container [2021-11-23 02:51:51,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:51:51" (3/3) ... [2021-11-23 02:51:51,211 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i [2021-11-23 02:51:51,218 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:51:51,218 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:51:51,280 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:51:51,287 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 02:51:51,287 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:51:51,338 INFO L276 IsEmpty]: Start isEmpty. Operand has 1407 states, 888 states have (on average 1.3468468468468469) internal successors, (1196), 920 states have internal predecessors, (1196), 418 states have call successors, (418), 100 states have call predecessors, (418), 99 states have return successors, (410), 407 states have call predecessors, (410), 410 states have call successors, (410) [2021-11-23 02:51:51,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-23 02:51:51,346 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:51:51,347 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:51:51,347 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:51:51,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:51:51,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1870990864, now seen corresponding path program 1 times [2021-11-23 02:51:51,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:51:51,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116605726] [2021-11-23 02:51:51,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:51:51,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:51:51,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:51:52,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:51:52,362 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:51:52,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116605726] [2021-11-23 02:51:52,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116605726] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:51:52,363 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:51:52,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:51:52,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227725410] [2021-11-23 02:51:52,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:51:52,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:51:52,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:51:52,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:51:52,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:51:52,424 INFO L87 Difference]: Start difference. First operand has 1407 states, 888 states have (on average 1.3468468468468469) internal successors, (1196), 920 states have internal predecessors, (1196), 418 states have call successors, (418), 100 states have call predecessors, (418), 99 states have return successors, (410), 407 states have call predecessors, (410), 410 states have call successors, (410) 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, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 02:51:55,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:51:55,140 INFO L93 Difference]: Finished difference Result 4199 states and 6087 transitions. [2021-11-23 02:51:55,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:51:55,142 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, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2021-11-23 02:51:55,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:51:55,189 INFO L225 Difference]: With dead ends: 4199 [2021-11-23 02:51:55,190 INFO L226 Difference]: Without dead ends: 2727 [2021-11-23 02:51:55,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:51:55,213 INFO L933 BasicCegarLoop]: 2220 mSDtfsCounter, 1991 mSDsluCounter, 2007 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1991 SdHoareTripleChecker+Valid, 4021 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:51:55,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1991 Valid, 4021 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-23 02:51:55,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2727 states. [2021-11-23 02:51:55,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2727 to 2727. [2021-11-23 02:51:55,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2727 states, 1714 states have (on average 1.3115519253208867) internal successors, (2248), 1758 states have internal predecessors, (2248), 816 states have call successors, (816), 197 states have call predecessors, (816), 196 states have return successors, (815), 809 states have call predecessors, (815), 815 states have call successors, (815) [2021-11-23 02:51:55,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2727 states to 2727 states and 3879 transitions. [2021-11-23 02:51:55,488 INFO L78 Accepts]: Start accepts. Automaton has 2727 states and 3879 transitions. Word has length 23 [2021-11-23 02:51:55,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:51:55,489 INFO L470 AbstractCegarLoop]: Abstraction has 2727 states and 3879 transitions. [2021-11-23 02:51:55,489 INFO L471 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, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 02:51:55,489 INFO L276 IsEmpty]: Start isEmpty. Operand 2727 states and 3879 transitions. [2021-11-23 02:51:55,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-23 02:51:55,493 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:51:55,493 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:51:55,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:51:55,494 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:51:55,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:51:55,494 INFO L85 PathProgramCache]: Analyzing trace with hash 537811977, now seen corresponding path program 1 times [2021-11-23 02:51:55,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:51:55,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965222399] [2021-11-23 02:51:55,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:51:55,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:51:55,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:51:55,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:51:55,976 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:51:55,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965222399] [2021-11-23 02:51:55,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965222399] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:51:55,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:51:55,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:51:55,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55110677] [2021-11-23 02:51:55,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:51:55,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:51:55,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:51:55,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:51:55,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:51:55,987 INFO L87 Difference]: Start difference. First operand 2727 states and 3879 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 02:52:00,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:52:00,469 INFO L93 Difference]: Finished difference Result 5449 states and 7787 transitions. [2021-11-23 02:52:00,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:52:00,469 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2021-11-23 02:52:00,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:52:00,528 INFO L225 Difference]: With dead ends: 5449 [2021-11-23 02:52:00,529 INFO L226 Difference]: Without dead ends: 5444 [2021-11-23 02:52:00,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:52:00,538 INFO L933 BasicCegarLoop]: 2188 mSDtfsCounter, 1930 mSDsluCounter, 4347 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1930 SdHoareTripleChecker+Valid, 6126 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:52:00,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1930 Valid, 6126 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 646 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2021-11-23 02:52:00,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5444 states. [2021-11-23 02:52:00,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5444 to 5436. [2021-11-23 02:52:00,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5436 states, 3414 states have (on average 1.3113649677797306) internal successors, (4477), 3502 states have internal predecessors, (4477), 1629 states have call successors, (1629), 393 states have call predecessors, (1629), 392 states have return successors, (1664), 1616 states have call predecessors, (1664), 1628 states have call successors, (1664) [2021-11-23 02:52:00,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5436 states to 5436 states and 7770 transitions. [2021-11-23 02:52:00,905 INFO L78 Accepts]: Start accepts. Automaton has 5436 states and 7770 transitions. Word has length 26 [2021-11-23 02:52:00,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:52:00,906 INFO L470 AbstractCegarLoop]: Abstraction has 5436 states and 7770 transitions. [2021-11-23 02:52:00,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 02:52:00,906 INFO L276 IsEmpty]: Start isEmpty. Operand 5436 states and 7770 transitions. [2021-11-23 02:52:00,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-23 02:52:00,934 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:52:00,935 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:52:00,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:52:00,936 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:52:00,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:52:00,936 INFO L85 PathProgramCache]: Analyzing trace with hash -2093474562, now seen corresponding path program 1 times [2021-11-23 02:52:00,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:52:00,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335774530] [2021-11-23 02:52:00,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:52:00,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:52:01,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:52:01,473 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 02:52:01,473 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:52:01,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335774530] [2021-11-23 02:52:01,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335774530] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:52:01,476 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:52:01,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:52:01,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650085448] [2021-11-23 02:52:01,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:52:01,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:52:01,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:52:01,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:52:01,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:52:01,482 INFO L87 Difference]: Start difference. First operand 5436 states and 7770 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-23 02:52:05,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:52:05,072 INFO L93 Difference]: Finished difference Result 15262 states and 21714 transitions. [2021-11-23 02:52:05,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:52:05,073 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 119 [2021-11-23 02:52:05,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:52:05,172 INFO L225 Difference]: With dead ends: 15262 [2021-11-23 02:52:05,172 INFO L226 Difference]: Without dead ends: 9831 [2021-11-23 02:52:05,211 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:52:05,215 INFO L933 BasicCegarLoop]: 2193 mSDtfsCounter, 1577 mSDsluCounter, 1857 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1577 SdHoareTripleChecker+Valid, 3856 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:52:05,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1577 Valid, 3856 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-11-23 02:52:05,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9831 states. [2021-11-23 02:52:05,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9831 to 9730. [2021-11-23 02:52:05,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9730 states, 6094 states have (on average 1.3062028224483098) internal successors, (7960), 6262 states have internal predecessors, (7960), 2899 states have call successors, (2899), 741 states have call predecessors, (2899), 736 states have return successors, (2960), 2862 states have call predecessors, (2960), 2898 states have call successors, (2960) [2021-11-23 02:52:05,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9730 states to 9730 states and 13819 transitions. [2021-11-23 02:52:05,854 INFO L78 Accepts]: Start accepts. Automaton has 9730 states and 13819 transitions. Word has length 119 [2021-11-23 02:52:05,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:52:05,856 INFO L470 AbstractCegarLoop]: Abstraction has 9730 states and 13819 transitions. [2021-11-23 02:52:05,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-23 02:52:05,858 INFO L276 IsEmpty]: Start isEmpty. Operand 9730 states and 13819 transitions. [2021-11-23 02:52:05,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-23 02:52:05,872 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:52:05,872 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:52:05,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:52:05,873 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:52:05,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:52:05,876 INFO L85 PathProgramCache]: Analyzing trace with hash 256335464, now seen corresponding path program 1 times [2021-11-23 02:52:05,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:52:05,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809464919] [2021-11-23 02:52:05,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:52:05,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:52:06,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:52:06,348 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 02:52:06,348 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:52:06,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809464919] [2021-11-23 02:52:06,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809464919] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:52:06,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:52:06,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:52:06,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087977669] [2021-11-23 02:52:06,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:52:06,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:52:06,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:52:06,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:52:06,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:52:06,352 INFO L87 Difference]: Start difference. First operand 9730 states and 13819 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-23 02:52:09,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:52:09,857 INFO L93 Difference]: Finished difference Result 25567 states and 36160 transitions. [2021-11-23 02:52:09,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:52:09,858 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 123 [2021-11-23 02:52:09,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:52:10,042 INFO L225 Difference]: With dead ends: 25567 [2021-11-23 02:52:10,042 INFO L226 Difference]: Without dead ends: 15842 [2021-11-23 02:52:10,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:52:10,138 INFO L933 BasicCegarLoop]: 2546 mSDtfsCounter, 1441 mSDsluCounter, 1924 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1441 SdHoareTripleChecker+Valid, 4268 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-23 02:52:10,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1441 Valid, 4268 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-23 02:52:10,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15842 states. [2021-11-23 02:52:11,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15842 to 15837. [2021-11-23 02:52:11,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15837 states, 10008 states have (on average 1.3048561151079137) internal successors, (13059), 10284 states have internal predecessors, (13059), 4591 states have call successors, (4591), 1242 states have call predecessors, (4591), 1237 states have return successors, (4686), 4542 states have call predecessors, (4686), 4590 states have call successors, (4686) [2021-11-23 02:52:11,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15837 states to 15837 states and 22336 transitions. [2021-11-23 02:52:11,225 INFO L78 Accepts]: Start accepts. Automaton has 15837 states and 22336 transitions. Word has length 123 [2021-11-23 02:52:11,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:52:11,227 INFO L470 AbstractCegarLoop]: Abstraction has 15837 states and 22336 transitions. [2021-11-23 02:52:11,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-23 02:52:11,228 INFO L276 IsEmpty]: Start isEmpty. Operand 15837 states and 22336 transitions. [2021-11-23 02:52:11,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-11-23 02:52:11,256 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:52:11,256 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:52:11,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 02:52:11,257 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:52:11,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:52:11,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1916764962, now seen corresponding path program 1 times [2021-11-23 02:52:11,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:52:11,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731041382] [2021-11-23 02:52:11,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:52:11,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:52:11,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:52:11,731 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-23 02:52:11,731 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:52:11,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731041382] [2021-11-23 02:52:11,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731041382] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:52:11,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:52:11,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:52:11,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064449057] [2021-11-23 02:52:11,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:52:11,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:52:11,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:52:11,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:52:11,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:52:11,734 INFO L87 Difference]: Start difference. First operand 15837 states and 22336 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-23 02:52:14,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:52:14,776 INFO L93 Difference]: Finished difference Result 38219 states and 53780 transitions. [2021-11-23 02:52:14,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:52:14,776 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 136 [2021-11-23 02:52:14,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:52:14,924 INFO L225 Difference]: With dead ends: 38219 [2021-11-23 02:52:14,924 INFO L226 Difference]: Without dead ends: 22390 [2021-11-23 02:52:14,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:52:14,995 INFO L933 BasicCegarLoop]: 3065 mSDtfsCounter, 1818 mSDsluCounter, 1645 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1818 SdHoareTripleChecker+Valid, 4542 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:52:14,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1818 Valid, 4542 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 544 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-23 02:52:15,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22390 states. [2021-11-23 02:52:16,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22390 to 22385. [2021-11-23 02:52:16,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22385 states, 14216 states have (on average 1.3038126055149128) internal successors, (18535), 14608 states have internal predecessors, (18535), 6367 states have call successors, (6367), 1806 states have call predecessors, (6367), 1801 states have return successors, (6500), 6302 states have call predecessors, (6500), 6366 states have call successors, (6500) [2021-11-23 02:52:16,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22385 states to 22385 states and 31402 transitions. [2021-11-23 02:52:16,183 INFO L78 Accepts]: Start accepts. Automaton has 22385 states and 31402 transitions. Word has length 136 [2021-11-23 02:52:16,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:52:16,184 INFO L470 AbstractCegarLoop]: Abstraction has 22385 states and 31402 transitions. [2021-11-23 02:52:16,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-23 02:52:16,185 INFO L276 IsEmpty]: Start isEmpty. Operand 22385 states and 31402 transitions. [2021-11-23 02:52:16,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-23 02:52:16,216 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:52:16,217 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:52:16,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 02:52:16,217 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:52:16,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:52:16,218 INFO L85 PathProgramCache]: Analyzing trace with hash 333929682, now seen corresponding path program 1 times [2021-11-23 02:52:16,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:52:16,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532791764] [2021-11-23 02:52:16,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:52:16,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:52:16,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:52:17,191 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-23 02:52:17,192 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:52:17,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532791764] [2021-11-23 02:52:17,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532791764] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:52:17,192 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:52:17,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:52:17,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404789110] [2021-11-23 02:52:17,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:52:17,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:52:17,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:52:17,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:52:17,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:52:17,195 INFO L87 Difference]: Start difference. First operand 22385 states and 31402 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 4 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-23 02:52:21,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:52:21,592 INFO L93 Difference]: Finished difference Result 44762 states and 62818 transitions. [2021-11-23 02:52:21,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:52:21,593 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 4 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) Word has length 151 [2021-11-23 02:52:21,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:52:21,721 INFO L225 Difference]: With dead ends: 44762 [2021-11-23 02:52:21,721 INFO L226 Difference]: Without dead ends: 22385 [2021-11-23 02:52:21,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:52:21,807 INFO L933 BasicCegarLoop]: 1740 mSDtfsCounter, 1915 mSDsluCounter, 1126 mSDsCounter, 0 mSdLazyCounter, 1235 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1915 SdHoareTripleChecker+Valid, 2661 SdHoareTripleChecker+Invalid, 1237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:52:21,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1915 Valid, 2661 Invalid, 1237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1235 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-11-23 02:52:21,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22385 states. [2021-11-23 02:52:22,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22385 to 22385. [2021-11-23 02:52:23,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22385 states, 14216 states have (on average 1.3032498593134496) internal successors, (18527), 14608 states have internal predecessors, (18527), 6367 states have call successors, (6367), 1806 states have call predecessors, (6367), 1801 states have return successors, (6500), 6302 states have call predecessors, (6500), 6366 states have call successors, (6500) [2021-11-23 02:52:23,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22385 states to 22385 states and 31394 transitions. [2021-11-23 02:52:23,125 INFO L78 Accepts]: Start accepts. Automaton has 22385 states and 31394 transitions. Word has length 151 [2021-11-23 02:52:23,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:52:23,126 INFO L470 AbstractCegarLoop]: Abstraction has 22385 states and 31394 transitions. [2021-11-23 02:52:23,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 4 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-23 02:52:23,127 INFO L276 IsEmpty]: Start isEmpty. Operand 22385 states and 31394 transitions. [2021-11-23 02:52:23,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-23 02:52:23,168 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:52:23,168 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:52:23,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 02:52:23,169 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:52:23,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:52:23,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1306870005, now seen corresponding path program 1 times [2021-11-23 02:52:23,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:52:23,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752014476] [2021-11-23 02:52:23,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:52:23,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:52:23,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:52:23,987 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-23 02:52:23,988 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:52:23,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752014476] [2021-11-23 02:52:23,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752014476] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:52:23,988 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:52:23,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 02:52:23,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357935276] [2021-11-23 02:52:23,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:52:23,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 02:52:23,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:52:23,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 02:52:23,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-23 02:52:23,990 INFO L87 Difference]: Start difference. First operand 22385 states and 31394 transitions. Second operand has 10 states, 7 states have (on average 15.714285714285714) internal successors, (110), 8 states have internal predecessors, (110), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2021-11-23 02:52:29,287 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:52:37,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:52:37,487 INFO L93 Difference]: Finished difference Result 45026 states and 63926 transitions. [2021-11-23 02:52:37,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 02:52:37,487 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 7 states have (on average 15.714285714285714) internal successors, (110), 8 states have internal predecessors, (110), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) Word has length 172 [2021-11-23 02:52:37,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:52:37,632 INFO L225 Difference]: With dead ends: 45026 [2021-11-23 02:52:37,632 INFO L226 Difference]: Without dead ends: 22649 [2021-11-23 02:52:37,745 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-11-23 02:52:37,748 INFO L933 BasicCegarLoop]: 1700 mSDtfsCounter, 32 mSDsluCounter, 12592 mSDsCounter, 0 mSdLazyCounter, 2566 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 13033 SdHoareTripleChecker+Invalid, 2581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:52:37,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 13033 Invalid, 2581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2566 Invalid, 0 Unknown, 0 Unchecked, 12.5s Time] [2021-11-23 02:52:37,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22649 states. [2021-11-23 02:52:38,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22649 to 22481. [2021-11-23 02:52:39,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22481 states, 14288 states have (on average 1.3017217245240762) internal successors, (18599), 14680 states have internal predecessors, (18599), 6391 states have call successors, (6391), 1806 states have call predecessors, (6391), 1801 states have return successors, (6524), 6326 states have call predecessors, (6524), 6390 states have call successors, (6524) [2021-11-23 02:52:39,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22481 states to 22481 states and 31514 transitions. [2021-11-23 02:52:39,141 INFO L78 Accepts]: Start accepts. Automaton has 22481 states and 31514 transitions. Word has length 172 [2021-11-23 02:52:39,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:52:39,142 INFO L470 AbstractCegarLoop]: Abstraction has 22481 states and 31514 transitions. [2021-11-23 02:52:39,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 7 states have (on average 15.714285714285714) internal successors, (110), 8 states have internal predecessors, (110), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2021-11-23 02:52:39,142 INFO L276 IsEmpty]: Start isEmpty. Operand 22481 states and 31514 transitions. [2021-11-23 02:52:39,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-11-23 02:52:39,192 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:52:39,193 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:52:39,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 02:52:39,193 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:52:39,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:52:39,194 INFO L85 PathProgramCache]: Analyzing trace with hash 903861149, now seen corresponding path program 1 times [2021-11-23 02:52:39,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:52:39,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204931729] [2021-11-23 02:52:39,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:52:39,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:52:39,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:52:39,851 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-23 02:52:39,851 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:52:39,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204931729] [2021-11-23 02:52:39,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204931729] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:52:39,852 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:52:39,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 02:52:39,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406233352] [2021-11-23 02:52:39,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:52:39,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 02:52:39,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:52:39,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 02:52:39,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 02:52:39,854 INFO L87 Difference]: Start difference. First operand 22481 states and 31514 transitions. Second operand has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-23 02:52:49,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:52:49,887 INFO L93 Difference]: Finished difference Result 65667 states and 93465 transitions. [2021-11-23 02:52:49,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 02:52:49,888 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 177 [2021-11-23 02:52:49,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:52:50,384 INFO L225 Difference]: With dead ends: 65667 [2021-11-23 02:52:50,384 INFO L226 Difference]: Without dead ends: 43194 [2021-11-23 02:52:50,509 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2021-11-23 02:52:50,510 INFO L933 BasicCegarLoop]: 3985 mSDtfsCounter, 4780 mSDsluCounter, 9768 mSDsCounter, 0 mSdLazyCounter, 6317 mSolverCounterSat, 1096 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4904 SdHoareTripleChecker+Valid, 12484 SdHoareTripleChecker+Invalid, 7413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1096 IncrementalHoareTripleChecker+Valid, 6317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2021-11-23 02:52:50,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4904 Valid, 12484 Invalid, 7413 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1096 Valid, 6317 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2021-11-23 02:52:50,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43194 states. [2021-11-23 02:52:52,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43194 to 35445. [2021-11-23 02:52:52,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35445 states, 22640 states have (on average 1.301899293286219) internal successors, (29475), 23256 states have internal predecessors, (29475), 9943 states have call successors, (9943), 2870 states have call predecessors, (9943), 2861 states have return successors, (10150), 9846 states have call predecessors, (10150), 9942 states have call successors, (10150) [2021-11-23 02:52:52,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35445 states to 35445 states and 49568 transitions. [2021-11-23 02:52:52,920 INFO L78 Accepts]: Start accepts. Automaton has 35445 states and 49568 transitions. Word has length 177 [2021-11-23 02:52:52,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:52:52,922 INFO L470 AbstractCegarLoop]: Abstraction has 35445 states and 49568 transitions. [2021-11-23 02:52:52,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-23 02:52:52,922 INFO L276 IsEmpty]: Start isEmpty. Operand 35445 states and 49568 transitions. [2021-11-23 02:52:52,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-11-23 02:52:52,971 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:52:52,972 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:52:52,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 02:52:52,972 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:52:52,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:52:52,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1823520199, now seen corresponding path program 1 times [2021-11-23 02:52:52,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:52:52,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120573218] [2021-11-23 02:52:52,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:52:52,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:52:53,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:52:53,785 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-23 02:52:53,785 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:52:53,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120573218] [2021-11-23 02:52:53,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120573218] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:52:53,786 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:52:53,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:52:53,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298629008] [2021-11-23 02:52:53,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:52:53,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:52:53,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:52:53,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:52:53,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:52:53,790 INFO L87 Difference]: Start difference. First operand 35445 states and 49568 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-11-23 02:52:56,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:52:56,650 INFO L93 Difference]: Finished difference Result 70882 states and 99126 transitions. [2021-11-23 02:52:56,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:52:56,650 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 181 [2021-11-23 02:52:56,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:52:56,795 INFO L225 Difference]: With dead ends: 70882 [2021-11-23 02:52:56,795 INFO L226 Difference]: Without dead ends: 35445 [2021-11-23 02:52:56,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:52:56,884 INFO L933 BasicCegarLoop]: 1739 mSDtfsCounter, 1918 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1918 SdHoareTripleChecker+Valid, 1739 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:52:56,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1918 Valid, 1739 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-23 02:52:56,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35445 states. [2021-11-23 02:52:58,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35445 to 35445. [2021-11-23 02:52:58,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35445 states, 22640 states have (on average 1.3015459363957598) internal successors, (29467), 23256 states have internal predecessors, (29467), 9943 states have call successors, (9943), 2870 states have call predecessors, (9943), 2861 states have return successors, (10150), 9846 states have call predecessors, (10150), 9942 states have call successors, (10150) [2021-11-23 02:52:58,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35445 states to 35445 states and 49560 transitions. [2021-11-23 02:52:58,791 INFO L78 Accepts]: Start accepts. Automaton has 35445 states and 49560 transitions. Word has length 181 [2021-11-23 02:52:58,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:52:58,792 INFO L470 AbstractCegarLoop]: Abstraction has 35445 states and 49560 transitions. [2021-11-23 02:52:58,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-11-23 02:52:58,792 INFO L276 IsEmpty]: Start isEmpty. Operand 35445 states and 49560 transitions. [2021-11-23 02:52:58,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-11-23 02:52:58,837 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:52:58,838 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:52:58,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 02:52:58,838 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:52:58,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:52:58,839 INFO L85 PathProgramCache]: Analyzing trace with hash 2009407605, now seen corresponding path program 1 times [2021-11-23 02:52:58,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:52:58,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510891150] [2021-11-23 02:52:58,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:52:58,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:52:59,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:52:59,342 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-23 02:52:59,342 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:52:59,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510891150] [2021-11-23 02:52:59,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510891150] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:52:59,343 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:52:59,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:52:59,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950511725] [2021-11-23 02:52:59,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:52:59,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:52:59,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:52:59,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:52:59,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:52:59,346 INFO L87 Difference]: Start difference. First operand 35445 states and 49560 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-23 02:53:03,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:53:03,836 INFO L93 Difference]: Finished difference Result 71138 states and 99578 transitions. [2021-11-23 02:53:03,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:53:03,836 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 189 [2021-11-23 02:53:03,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:53:03,992 INFO L225 Difference]: With dead ends: 71138 [2021-11-23 02:53:03,992 INFO L226 Difference]: Without dead ends: 35701 [2021-11-23 02:53:04,097 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:53:04,098 INFO L933 BasicCegarLoop]: 1741 mSDtfsCounter, 13 mSDsluCounter, 1936 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 3473 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:53:04,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 3473 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-11-23 02:53:04,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35701 states. [2021-11-23 02:53:05,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35701 to 35477. [2021-11-23 02:53:05,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35477 states, 22672 states have (on average 1.301120324629499) internal successors, (29499), 23288 states have internal predecessors, (29499), 9943 states have call successors, (9943), 2870 states have call predecessors, (9943), 2861 states have return successors, (10150), 9846 states have call predecessors, (10150), 9942 states have call successors, (10150) [2021-11-23 02:53:05,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35477 states to 35477 states and 49592 transitions. [2021-11-23 02:53:05,622 INFO L78 Accepts]: Start accepts. Automaton has 35477 states and 49592 transitions. Word has length 189 [2021-11-23 02:53:05,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:53:05,623 INFO L470 AbstractCegarLoop]: Abstraction has 35477 states and 49592 transitions. [2021-11-23 02:53:05,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-23 02:53:05,623 INFO L276 IsEmpty]: Start isEmpty. Operand 35477 states and 49592 transitions. [2021-11-23 02:53:05,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-11-23 02:53:05,665 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:53:05,665 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:53:05,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 02:53:05,666 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:53:05,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:53:05,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1303802383, now seen corresponding path program 1 times [2021-11-23 02:53:05,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:53:05,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942639185] [2021-11-23 02:53:05,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:53:05,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:53:05,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:53:06,108 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-23 02:53:06,109 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:53:06,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942639185] [2021-11-23 02:53:06,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942639185] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:53:06,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640619058] [2021-11-23 02:53:06,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:53:06,110 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:53:06,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d06f62a-d19f-43a7-88eb-ff4ef113a6f2/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:53:06,116 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d06f62a-d19f-43a7-88eb-ff4ef113a6f2/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:53:06,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d06f62a-d19f-43a7-88eb-ff4ef113a6f2/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:53:07,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:53:07,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 8477 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:53:07,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:53:08,393 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-23 02:53:08,393 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:53:08,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640619058] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:53:08,394 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 02:53:08,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-23 02:53:08,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956137046] [2021-11-23 02:53:08,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:53:08,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:53:08,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:53:08,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:53:08,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:53:08,396 INFO L87 Difference]: Start difference. First operand 35477 states and 49592 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-23 02:53:11,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:53:11,370 INFO L93 Difference]: Finished difference Result 53334 states and 74786 transitions. [2021-11-23 02:53:11,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:53:11,371 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 196 [2021-11-23 02:53:11,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:53:11,512 INFO L225 Difference]: With dead ends: 53334 [2021-11-23 02:53:11,512 INFO L226 Difference]: Without dead ends: 35557 [2021-11-23 02:53:11,584 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:53:11,585 INFO L933 BasicCegarLoop]: 1739 mSDtfsCounter, 4 mSDsluCounter, 1939 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 3472 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-23 02:53:11,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 3472 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-23 02:53:11,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35557 states. [2021-11-23 02:53:12,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35557 to 35557. [2021-11-23 02:53:12,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35557 states, 22732 states have (on average 1.300325532289284) internal successors, (29559), 23368 states have internal predecessors, (29559), 9943 states have call successors, (9943), 2870 states have call predecessors, (9943), 2881 states have return successors, (10186), 9846 states have call predecessors, (10186), 9942 states have call successors, (10186) [2021-11-23 02:53:13,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35557 states to 35557 states and 49688 transitions. [2021-11-23 02:53:13,047 INFO L78 Accepts]: Start accepts. Automaton has 35557 states and 49688 transitions. Word has length 196 [2021-11-23 02:53:13,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:53:13,047 INFO L470 AbstractCegarLoop]: Abstraction has 35557 states and 49688 transitions. [2021-11-23 02:53:13,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-23 02:53:13,048 INFO L276 IsEmpty]: Start isEmpty. Operand 35557 states and 49688 transitions. [2021-11-23 02:53:13,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-11-23 02:53:13,088 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:53:13,089 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:53:13,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d06f62a-d19f-43a7-88eb-ff4ef113a6f2/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:53:13,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d06f62a-d19f-43a7-88eb-ff4ef113a6f2/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-23 02:53:13,315 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:53:13,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:53:13,315 INFO L85 PathProgramCache]: Analyzing trace with hash 863245442, now seen corresponding path program 1 times [2021-11-23 02:53:13,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:53:13,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685051739] [2021-11-23 02:53:13,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:53:13,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:53:13,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:53:14,164 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-23 02:53:14,166 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:53:14,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685051739] [2021-11-23 02:53:14,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685051739] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:53:14,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884965727] [2021-11-23 02:53:14,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:53:14,167 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:53:14,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d06f62a-d19f-43a7-88eb-ff4ef113a6f2/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:53:14,168 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d06f62a-d19f-43a7-88eb-ff4ef113a6f2/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:53:14,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d06f62a-d19f-43a7-88eb-ff4ef113a6f2/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 02:53:15,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:53:15,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 8485 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:53:15,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:53:16,341 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-23 02:53:16,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:53:16,853 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-23 02:53:16,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884965727] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:53:16,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [322266462] [2021-11-23 02:53:16,884 INFO L159 IcfgInterpreter]: Started Sifa with 174 locations of interest [2021-11-23 02:53:16,885 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:53:16,891 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:53:16,898 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:53:16,898 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:53:58,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:53:59,425 INFO L244 Elim1Store]: Index analysis took 946 ms [2021-11-23 02:54:36,564 WARN L227 SmtUtils]: Spent 37.05s on a formula simplification. DAG size of input: 1963 DAG size of output: 1071 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-23 02:54:36,570 INFO L354 Elim1Store]: treesize reduction 3204, result has 33.3 percent of original size [2021-11-23 02:54:36,575 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 181 select indices, 181 select index equivalence classes, 16112 disjoint index pairs (out of 16290 index pairs), introduced 181 new quantified variables, introduced 356 case distinctions, treesize of input 912 treesize of output 2161