./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--infiniband--core--ib_uverbs.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6e2320-ca94-4755-a690-dbfcf922a982/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6e2320-ca94-4755-a690-dbfcf922a982/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6e2320-ca94-4755-a690-dbfcf922a982/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6e2320-ca94-4755-a690-dbfcf922a982/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--infiniband--core--ib_uverbs.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6e2320-ca94-4755-a690-dbfcf922a982/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6e2320-ca94-4755-a690-dbfcf922a982/bin/utaipan-I9t0OCRTmS --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 9be531e7af87cba73be4f8246e93f3d32963d00e421fc44d0f45559eac1d9e7a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 07:47:21,199 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:47:21,201 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:47:21,219 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:47:21,220 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:47:21,221 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:47:21,222 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:47:21,224 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:47:21,226 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:47:21,227 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:47:21,228 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:47:21,229 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:47:21,229 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:47:21,230 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:47:21,231 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:47:21,232 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:47:21,233 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:47:21,234 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:47:21,236 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:47:21,238 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:47:21,240 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:47:21,241 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:47:21,242 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:47:21,243 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:47:21,247 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:47:21,247 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:47:21,248 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:47:21,249 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:47:21,250 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:47:21,251 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:47:21,251 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:47:21,252 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:47:21,253 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:47:21,254 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:47:21,255 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:47:21,256 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:47:21,256 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:47:21,257 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:47:21,257 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:47:21,258 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:47:21,259 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:47:21,260 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6e2320-ca94-4755-a690-dbfcf922a982/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 07:47:21,282 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:47:21,282 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:47:21,283 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:47:21,283 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:47:21,284 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:47:21,284 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:47:21,284 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:47:21,285 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:47:21,285 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:47:21,285 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:47:21,285 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:47:21,286 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:47:21,286 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:47:21,286 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:47:21,287 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:47:21,287 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:47:21,287 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:47:21,288 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:47:21,288 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:47:21,289 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:47:21,289 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:47:21,289 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:47:21,290 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:47:21,290 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:47:21,290 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:47:21,290 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:47:21,291 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:47:21,291 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:47:21,291 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:47:21,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:47:21,292 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:47:21,292 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:47:21,293 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:47:21,293 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:47:21,293 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:47:21,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:47:21,294 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:47:21,294 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:47:21,294 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6e2320-ca94-4755-a690-dbfcf922a982/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6e2320-ca94-4755-a690-dbfcf922a982/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9be531e7af87cba73be4f8246e93f3d32963d00e421fc44d0f45559eac1d9e7a [2022-11-19 07:47:21,539 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:47:21,563 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:47:21,566 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:47:21,567 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:47:21,568 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:47:21,569 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6e2320-ca94-4755-a690-dbfcf922a982/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--infiniband--core--ib_uverbs.ko-entry_point.cil.out.i [2022-11-19 07:47:21,630 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6e2320-ca94-4755-a690-dbfcf922a982/bin/utaipan-I9t0OCRTmS/data/a0ddbbdf5/345fdd8a93e2401f8031f83fa9378371/FLAGbb7525638 [2022-11-19 07:47:22,620 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:47:22,622 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6e2320-ca94-4755-a690-dbfcf922a982/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--infiniband--core--ib_uverbs.ko-entry_point.cil.out.i [2022-11-19 07:47:22,678 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6e2320-ca94-4755-a690-dbfcf922a982/bin/utaipan-I9t0OCRTmS/data/a0ddbbdf5/345fdd8a93e2401f8031f83fa9378371/FLAGbb7525638 [2022-11-19 07:47:22,986 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6e2320-ca94-4755-a690-dbfcf922a982/bin/utaipan-I9t0OCRTmS/data/a0ddbbdf5/345fdd8a93e2401f8031f83fa9378371 [2022-11-19 07:47:22,988 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:47:22,989 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:47:22,992 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:47:22,992 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:47:22,996 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:47:22,997 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:47:22" (1/1) ... [2022-11-19 07:47:22,998 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7572dd3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:22, skipping insertion in model container [2022-11-19 07:47:22,999 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:47:22" (1/1) ... [2022-11-19 07:47:23,006 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:47:23,192 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:47:26,019 WARN L234 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_1f6e2320-ca94-4755-a690-dbfcf922a982/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--infiniband--core--ib_uverbs.ko-entry_point.cil.out.i[354644,354657] [2022-11-19 07:47:26,094 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:47:26,191 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:47:26,790 WARN L234 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_1f6e2320-ca94-4755-a690-dbfcf922a982/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--infiniband--core--ib_uverbs.ko-entry_point.cil.out.i[354644,354657] [2022-11-19 07:47:26,800 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:47:26,935 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:47:26,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:26 WrapperNode [2022-11-19 07:47:26,936 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:47:26,937 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:47:26,937 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:47:26,937 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:47:26,945 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:26" (1/1) ... [2022-11-19 07:47:27,142 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:26" (1/1) ... [2022-11-19 07:47:27,456 INFO L138 Inliner]: procedures = 371, calls = 4454, calls flagged for inlining = 165, calls inlined = 164, statements flattened = 10010 [2022-11-19 07:47:27,457 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:47:27,457 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:47:27,458 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:47:27,458 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:47:27,470 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:26" (1/1) ... [2022-11-19 07:47:27,470 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:26" (1/1) ... [2022-11-19 07:47:27,552 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:26" (1/1) ... [2022-11-19 07:47:27,553 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:26" (1/1) ... [2022-11-19 07:47:27,824 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:26" (1/1) ... [2022-11-19 07:47:27,915 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:26" (1/1) ... [2022-11-19 07:47:27,964 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:26" (1/1) ... [2022-11-19 07:47:27,989 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:26" (1/1) ... [2022-11-19 07:47:28,040 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:47:28,042 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:47:28,042 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:47:28,042 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:47:28,044 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:26" (1/1) ... [2022-11-19 07:47:28,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:47:28,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6e2320-ca94-4755-a690-dbfcf922a982/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:47:28,081 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6e2320-ca94-4755-a690-dbfcf922a982/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:47:28,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6e2320-ca94-4755-a690-dbfcf922a982/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:47:28,133 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-11-19 07:47:28,133 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-11-19 07:47:28,192 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_open [2022-11-19 07:47:28,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_open [2022-11-19 07:47:28,192 INFO L130 BoogieDeclarations]: Found specification of procedure put_qp_write [2022-11-19 07:47:28,192 INFO L138 BoogieDeclarations]: Found implementation of procedure put_qp_write [2022-11-19 07:47:28,192 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_close [2022-11-19 07:47:28,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_close [2022-11-19 07:47:28,192 INFO L130 BoogieDeclarations]: Found specification of procedure idr_read_qp [2022-11-19 07:47:28,192 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_read_qp [2022-11-19 07:47:28,192 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2022-11-19 07:47:28,193 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2022-11-19 07:47:28,193 INFO L130 BoogieDeclarations]: Found specification of procedure fdget [2022-11-19 07:47:28,193 INFO L138 BoogieDeclarations]: Found implementation of procedure fdget [2022-11-19 07:47:28,193 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_del [2022-11-19 07:47:28,193 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_del [2022-11-19 07:47:28,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-19 07:47:28,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-19 07:47:28,193 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 07:47:28,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 07:47:28,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-19 07:47:28,194 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-19 07:47:28,194 INFO L130 BoogieDeclarations]: Found specification of procedure ib_destroy_cq [2022-11-19 07:47:28,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_destroy_cq [2022-11-19 07:47:28,194 INFO L130 BoogieDeclarations]: Found specification of procedure show_ibdev [2022-11-19 07:47:28,194 INFO L138 BoogieDeclarations]: Found implementation of procedure show_ibdev [2022-11-19 07:47:28,194 INFO L130 BoogieDeclarations]: Found specification of procedure ib_query_device [2022-11-19 07:47:28,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_query_device [2022-11-19 07:47:28,194 INFO L130 BoogieDeclarations]: Found specification of procedure fd_install [2022-11-19 07:47:28,194 INFO L138 BoogieDeclarations]: Found implementation of procedure fd_install [2022-11-19 07:47:28,194 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_event_close [2022-11-19 07:47:28,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_event_close [2022-11-19 07:47:28,195 INFO L130 BoogieDeclarations]: Found specification of procedure idr_destroy [2022-11-19 07:47:28,195 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_destroy [2022-11-19 07:47:28,195 INFO L130 BoogieDeclarations]: Found specification of procedure ib_copy_to_udata [2022-11-19 07:47:28,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_copy_to_udata [2022-11-19 07:47:28,195 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-11-19 07:47:28,195 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-11-19 07:47:28,195 INFO L130 BoogieDeclarations]: Found specification of procedure put_pd_read [2022-11-19 07:47:28,195 INFO L138 BoogieDeclarations]: Found implementation of procedure put_pd_read [2022-11-19 07:47:28,195 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 07:47:28,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 07:47:28,195 INFO L130 BoogieDeclarations]: Found specification of procedure idr_write_qp [2022-11-19 07:47:28,196 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_write_qp [2022-11-19 07:47:28,196 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2022-11-19 07:47:28,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2022-11-19 07:47:28,196 INFO L130 BoogieDeclarations]: Found specification of procedure idr_read_uobj [2022-11-19 07:47:28,196 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_read_uobj [2022-11-19 07:47:28,196 INFO L130 BoogieDeclarations]: Found specification of procedure ib_dealloc_xrcd [2022-11-19 07:47:28,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_dealloc_xrcd [2022-11-19 07:47:28,196 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_release_file [2022-11-19 07:47:28,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_release_file [2022-11-19 07:47:28,196 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-19 07:47:28,197 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-19 07:47:28,197 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2022-11-19 07:47:28,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2022-11-19 07:47:28,197 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-19 07:47:28,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-19 07:47:28,197 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_sub_and_test [2022-11-19 07:47:28,197 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_sub_and_test [2022-11-19 07:47:28,197 INFO L130 BoogieDeclarations]: Found specification of procedure idr_read_pd [2022-11-19 07:47:28,197 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_read_pd [2022-11-19 07:47:28,197 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_modify_srq [2022-11-19 07:47:28,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_modify_srq [2022-11-19 07:47:28,198 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2022-11-19 07:47:28,198 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2022-11-19 07:47:28,198 INFO L130 BoogieDeclarations]: Found specification of procedure fdput [2022-11-19 07:47:28,198 INFO L138 BoogieDeclarations]: Found implementation of procedure fdput [2022-11-19 07:47:28,198 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-19 07:47:28,198 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-19 07:47:28,198 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_release_ucq [2022-11-19 07:47:28,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_release_ucq [2022-11-19 07:47:28,198 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-19 07:47:28,198 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-19 07:47:28,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-19 07:47:28,199 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-19 07:47:28,199 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-19 07:47:28,199 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-19 07:47:28,199 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_unmarshall_recv [2022-11-19 07:47:28,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_unmarshall_recv [2022-11-19 07:47:28,199 INFO L130 BoogieDeclarations]: Found specification of procedure idr_add_uobj [2022-11-19 07:47:28,199 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_add_uobj [2022-11-19 07:47:28,199 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-19 07:47:28,199 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-19 07:47:28,200 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_ex_query_device [2022-11-19 07:47:28,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_ex_query_device [2022-11-19 07:47:28,200 INFO L130 BoogieDeclarations]: Found specification of procedure idr_write_uobj [2022-11-19 07:47:28,200 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_write_uobj [2022-11-19 07:47:28,200 INFO L130 BoogieDeclarations]: Found specification of procedure __init_rwsem [2022-11-19 07:47:28,200 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_rwsem [2022-11-19 07:47:28,200 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-11-19 07:47:28,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-11-19 07:47:28,200 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_mmap [2022-11-19 07:47:28,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_mmap [2022-11-19 07:47:28,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:47:28,201 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-19 07:47:28,201 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-19 07:47:28,201 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_event_poll [2022-11-19 07:47:28,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_event_poll [2022-11-19 07:47:28,201 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-19 07:47:28,201 INFO L130 BoogieDeclarations]: Found specification of procedure __uverbs_create_xsrq [2022-11-19 07:47:28,201 INFO L138 BoogieDeclarations]: Found implementation of procedure __uverbs_create_xsrq [2022-11-19 07:47:28,202 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_event_fasync [2022-11-19 07:47:28,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_event_fasync [2022-11-19 07:47:28,202 INFO L130 BoogieDeclarations]: Found specification of procedure init_uobj [2022-11-19 07:47:28,202 INFO L138 BoogieDeclarations]: Found implementation of procedure init_uobj [2022-11-19 07:47:28,202 INFO L130 BoogieDeclarations]: Found specification of procedure put_xrcd_read [2022-11-19 07:47:28,202 INFO L138 BoogieDeclarations]: Found implementation of procedure put_xrcd_read [2022-11-19 07:47:28,202 INFO L130 BoogieDeclarations]: Found specification of procedure copy_query_dev_fields [2022-11-19 07:47:28,202 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_query_dev_fields [2022-11-19 07:47:28,202 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 07:47:28,202 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_alloc_event_file [2022-11-19 07:47:28,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_alloc_event_file [2022-11-19 07:47:28,203 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2022-11-19 07:47:28,203 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2022-11-19 07:47:28,203 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2022-11-19 07:47:28,203 INFO L130 BoogieDeclarations]: Found specification of procedure put_pid [2022-11-19 07:47:28,203 INFO L138 BoogieDeclarations]: Found implementation of procedure put_pid [2022-11-19 07:47:28,203 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-19 07:47:28,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-19 07:47:28,203 INFO L130 BoogieDeclarations]: Found specification of procedure put_uobj [2022-11-19 07:47:28,203 INFO L138 BoogieDeclarations]: Found implementation of procedure put_uobj [2022-11-19 07:47:28,203 INFO L130 BoogieDeclarations]: Found specification of procedure up_write [2022-11-19 07:47:28,204 INFO L138 BoogieDeclarations]: Found implementation of procedure up_write [2022-11-19 07:47:28,204 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_event_read [2022-11-19 07:47:28,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_event_read [2022-11-19 07:47:28,204 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2022-11-19 07:47:28,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2022-11-19 07:47:28,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:47:28,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 07:47:28,204 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2022-11-19 07:47:28,204 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2022-11-19 07:47:28,204 INFO L130 BoogieDeclarations]: Found specification of procedure idr_read_obj [2022-11-19 07:47:28,205 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_read_obj [2022-11-19 07:47:28,205 INFO L130 BoogieDeclarations]: Found specification of procedure ib_destroy_qp [2022-11-19 07:47:28,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_destroy_qp [2022-11-19 07:47:28,205 INFO L130 BoogieDeclarations]: Found specification of procedure idr_remove_uobj [2022-11-19 07:47:28,205 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_remove_uobj [2022-11-19 07:47:28,205 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2022-11-19 07:47:28,205 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2022-11-19 07:47:28,205 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-19 07:47:28,205 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-19 07:47:28,205 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_chrdev_region [2022-11-19 07:47:28,206 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_chrdev_region [2022-11-19 07:47:28,206 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-11-19 07:47:28,206 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-11-19 07:47:28,206 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-19 07:47:28,206 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-19 07:47:28,206 INFO L130 BoogieDeclarations]: Found specification of procedure ib_destroy_ah [2022-11-19 07:47:28,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_destroy_ah [2022-11-19 07:47:28,206 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-19 07:47:28,206 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-19 07:47:28,206 INFO L130 BoogieDeclarations]: Found specification of procedure fput [2022-11-19 07:47:28,206 INFO L138 BoogieDeclarations]: Found implementation of procedure fput [2022-11-19 07:47:28,206 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-19 07:47:28,207 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-19 07:47:28,207 INFO L130 BoogieDeclarations]: Found specification of procedure put_uobj_read [2022-11-19 07:47:28,207 INFO L138 BoogieDeclarations]: Found implementation of procedure put_uobj_read [2022-11-19 07:47:28,207 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-19 07:47:28,207 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-19 07:47:28,207 INFO L130 BoogieDeclarations]: Found specification of procedure ib_destroy_srq [2022-11-19 07:47:28,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_destroy_srq [2022-11-19 07:47:28,207 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_write [2022-11-19 07:47:28,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_write [2022-11-19 07:47:28,207 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-19 07:47:28,208 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-11-19 07:47:28,208 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-11-19 07:47:28,208 INFO L130 BoogieDeclarations]: Found specification of procedure xrcd_table_search [2022-11-19 07:47:28,208 INFO L138 BoogieDeclarations]: Found implementation of procedure xrcd_table_search [2022-11-19 07:47:28,208 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-19 07:47:28,208 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-19 07:47:28,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-19 07:47:28,208 INFO L130 BoogieDeclarations]: Found specification of procedure ib_dealloc_mw [2022-11-19 07:47:28,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_dealloc_mw [2022-11-19 07:47:28,208 INFO L130 BoogieDeclarations]: Found specification of procedure __idr_get_uobj [2022-11-19 07:47:28,209 INFO L138 BoogieDeclarations]: Found implementation of procedure __idr_get_uobj [2022-11-19 07:47:28,209 INFO L130 BoogieDeclarations]: Found specification of procedure put_uobj_write [2022-11-19 07:47:28,209 INFO L138 BoogieDeclarations]: Found implementation of procedure put_uobj_write [2022-11-19 07:47:28,209 INFO L130 BoogieDeclarations]: Found specification of procedure kref_get [2022-11-19 07:47:28,209 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_get [2022-11-19 07:47:28,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 07:47:28,209 INFO L130 BoogieDeclarations]: Found specification of procedure put_srq_read [2022-11-19 07:47:28,209 INFO L138 BoogieDeclarations]: Found implementation of procedure put_srq_read [2022-11-19 07:47:28,209 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-19 07:47:28,209 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-19 07:47:28,209 INFO L130 BoogieDeclarations]: Found specification of procedure ib_dereg_mr [2022-11-19 07:47:28,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_dereg_mr [2022-11-19 07:47:28,210 INFO L130 BoogieDeclarations]: Found specification of procedure put_unused_fd [2022-11-19 07:47:28,210 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unused_fd [2022-11-19 07:47:28,210 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_watching [2022-11-19 07:47:28,210 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_watching [2022-11-19 07:47:28,210 INFO L130 BoogieDeclarations]: Found specification of procedure create_cq [2022-11-19 07:47:28,210 INFO L138 BoogieDeclarations]: Found implementation of procedure create_cq [2022-11-19 07:47:28,210 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-19 07:47:28,210 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-19 07:47:28,210 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-11-19 07:47:28,211 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-11-19 07:47:28,211 INFO L130 BoogieDeclarations]: Found specification of procedure modify_qp_mask [2022-11-19 07:47:28,211 INFO L138 BoogieDeclarations]: Found implementation of procedure modify_qp_mask [2022-11-19 07:47:28,211 INFO L130 BoogieDeclarations]: Found specification of procedure class_destroy [2022-11-19 07:47:28,211 INFO L138 BoogieDeclarations]: Found implementation of procedure class_destroy [2022-11-19 07:47:28,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 07:47:28,211 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-11-19 07:47:28,211 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-11-19 07:47:28,211 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_unlock [2022-11-19 07:47:28,211 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_unlock [2022-11-19 07:47:28,211 INFO L130 BoogieDeclarations]: Found specification of procedure find_first_zero_bit [2022-11-19 07:47:28,212 INFO L138 BoogieDeclarations]: Found implementation of procedure find_first_zero_bit [2022-11-19 07:47:28,212 INFO L130 BoogieDeclarations]: Found specification of procedure __read_once_size [2022-11-19 07:47:28,212 INFO L138 BoogieDeclarations]: Found implementation of procedure __read_once_size [2022-11-19 07:47:28,212 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2022-11-19 07:47:28,212 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2022-11-19 07:47:28,212 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 07:47:28,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 07:47:28,212 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-11-19 07:47:28,212 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-11-19 07:47:28,213 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-19 07:47:28,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-19 07:47:28,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 07:47:28,213 INFO L130 BoogieDeclarations]: Found specification of procedure get_unused_fd_flags [2022-11-19 07:47:28,213 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unused_fd_flags [2022-11-19 07:47:28,213 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-19 07:47:28,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-19 07:47:28,213 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-11-19 07:47:28,213 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-11-19 07:47:28,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:47:28,214 INFO L130 BoogieDeclarations]: Found specification of procedure idr_read_xrcd [2022-11-19 07:47:28,214 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_read_xrcd [2022-11-19 07:47:28,214 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2022-11-19 07:47:28,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2022-11-19 07:47:28,214 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2022-11-19 07:47:28,214 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2022-11-19 07:47:28,214 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion [2022-11-19 07:47:28,214 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion [2022-11-19 07:47:28,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 07:47:28,215 INFO L130 BoogieDeclarations]: Found specification of procedure ib_check_mr_access [2022-11-19 07:47:28,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_check_mr_access [2022-11-19 07:47:28,215 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2022-11-19 07:47:28,215 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2022-11-19 07:47:28,215 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-19 07:47:28,215 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-19 07:47:28,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-19 07:47:28,215 INFO L130 BoogieDeclarations]: Found specification of procedure kref_init [2022-11-19 07:47:28,215 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_init [2022-11-19 07:47:28,216 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-11-19 07:47:28,216 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-11-19 07:47:28,216 INFO L130 BoogieDeclarations]: Found specification of procedure ib_destroy_flow [2022-11-19 07:47:28,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_destroy_flow [2022-11-19 07:47:28,216 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-19 07:47:28,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-19 07:47:28,216 INFO L130 BoogieDeclarations]: Found specification of procedure kref_get___0 [2022-11-19 07:47:28,216 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_get___0 [2022-11-19 07:47:28,216 INFO L130 BoogieDeclarations]: Found specification of procedure xrcd_table_delete [2022-11-19 07:47:28,217 INFO L138 BoogieDeclarations]: Found implementation of procedure xrcd_table_delete [2022-11-19 07:47:28,217 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_remove_one [2022-11-19 07:47:28,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_remove_one [2022-11-19 07:47:28,217 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2022-11-19 07:47:28,217 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2022-11-19 07:47:28,217 INFO L130 BoogieDeclarations]: Found specification of procedure ib_detach_mcast [2022-11-19 07:47:28,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_detach_mcast [2022-11-19 07:47:28,217 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-19 07:47:28,217 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-19 07:47:28,217 INFO L130 BoogieDeclarations]: Found specification of procedure show_dev_abi_version [2022-11-19 07:47:28,218 INFO L138 BoogieDeclarations]: Found implementation of procedure show_dev_abi_version [2022-11-19 07:47:28,218 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~TO~int [2022-11-19 07:47:28,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~TO~int [2022-11-19 07:47:28,218 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_add_return [2022-11-19 07:47:28,218 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_add_return [2022-11-19 07:47:28,218 INFO L130 BoogieDeclarations]: Found specification of procedure idr_read_cq [2022-11-19 07:47:28,218 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_read_cq [2022-11-19 07:47:28,218 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-19 07:47:28,218 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-19 07:47:28,218 INFO L130 BoogieDeclarations]: Found specification of procedure idr_read_srq [2022-11-19 07:47:28,219 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_read_srq [2022-11-19 07:47:28,219 INFO L130 BoogieDeclarations]: Found specification of procedure down_write [2022-11-19 07:47:28,219 INFO L138 BoogieDeclarations]: Found implementation of procedure down_write [2022-11-19 07:47:28,219 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_add_one [2022-11-19 07:47:28,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_add_one [2022-11-19 07:47:28,219 INFO L130 BoogieDeclarations]: Found specification of procedure put_qp_read [2022-11-19 07:47:28,219 INFO L138 BoogieDeclarations]: Found implementation of procedure put_qp_read [2022-11-19 07:47:28,220 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-19 07:47:28,220 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-19 07:47:28,220 INFO L130 BoogieDeclarations]: Found specification of procedure no_llseek [2022-11-19 07:47:28,220 INFO L138 BoogieDeclarations]: Found implementation of procedure no_llseek [2022-11-19 07:47:28,220 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-19 07:47:28,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-19 07:47:28,220 INFO L130 BoogieDeclarations]: Found specification of procedure device_destroy [2022-11-19 07:47:28,220 INFO L138 BoogieDeclarations]: Found implementation of procedure device_destroy [2022-11-19 07:47:28,220 INFO L130 BoogieDeclarations]: Found specification of procedure ib_copy_from_udata [2022-11-19 07:47:28,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_copy_from_udata [2022-11-19 07:47:28,221 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-11-19 07:47:28,221 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-11-19 07:47:28,221 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_release_uevent [2022-11-19 07:47:28,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_release_uevent [2022-11-19 07:47:28,221 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-19 07:47:28,221 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-19 07:47:28,221 INFO L130 BoogieDeclarations]: Found specification of procedure put_cq_read [2022-11-19 07:47:28,221 INFO L138 BoogieDeclarations]: Found implementation of procedure put_cq_read [2022-11-19 07:47:28,221 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_modify_qp [2022-11-19 07:47:28,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_modify_qp [2022-11-19 07:47:28,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:47:28,222 INFO L130 BoogieDeclarations]: Found specification of procedure show_class_attr_string [2022-11-19 07:47:28,222 INFO L138 BoogieDeclarations]: Found implementation of procedure show_class_attr_string [2022-11-19 07:47:28,222 INFO L130 BoogieDeclarations]: Found specification of procedure ib_dealloc_pd [2022-11-19 07:47:28,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_dealloc_pd [2022-11-19 07:47:28,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:47:28,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:47:28,223 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~$Pointer$ [2022-11-19 07:47:28,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~$Pointer$ [2022-11-19 07:47:28,223 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-19 07:47:28,223 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-19 07:47:29,497 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:47:29,501 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:47:30,065 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 07:47:59,852 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:48:01,622 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:48:01,622 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-19 07:48:01,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:48:01 BoogieIcfgContainer [2022-11-19 07:48:01,629 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:48:01,633 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:48:01,634 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:48:01,637 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:48:01,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:47:22" (1/3) ... [2022-11-19 07:48:01,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ce541aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:48:01, skipping insertion in model container [2022-11-19 07:48:01,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:26" (2/3) ... [2022-11-19 07:48:01,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ce541aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:48:01, skipping insertion in model container [2022-11-19 07:48:01,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:48:01" (3/3) ... [2022-11-19 07:48:01,643 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--infiniband--core--ib_uverbs.ko-entry_point.cil.out.i [2022-11-19 07:48:01,665 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:48:01,665 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:48:01,806 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:48:01,812 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@278b2775, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:48:01,812 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:48:01,824 INFO L276 IsEmpty]: Start isEmpty. Operand has 2536 states, 1517 states have (on average 1.3651944627554384) internal successors, (2071), 1593 states have internal predecessors, (2071), 872 states have call successors, (872), 146 states have call predecessors, (872), 145 states have return successors, (863), 857 states have call predecessors, (863), 863 states have call successors, (863) [2022-11-19 07:48:01,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2022-11-19 07:48:01,854 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:48:01,855 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:48:01,855 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:48:01,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:48:01,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1179002122, now seen corresponding path program 1 times [2022-11-19 07:48:01,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:48:01,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182198983] [2022-11-19 07:48:01,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:48:01,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:48:02,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:48:03,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1745 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1745 trivial. 0 not checked. [2022-11-19 07:48:03,810 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:48:03,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182198983] [2022-11-19 07:48:03,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182198983] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:48:03,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:48:03,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:48:03,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795554646] [2022-11-19 07:48:03,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:48:03,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:48:03,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:48:03,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:48:03,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:48:03,873 INFO L87 Difference]: Start difference. First operand has 2536 states, 1517 states have (on average 1.3651944627554384) internal successors, (2071), 1593 states have internal predecessors, (2071), 872 states have call successors, (872), 146 states have call predecessors, (872), 145 states have return successors, (863), 857 states have call predecessors, (863), 863 states have call successors, (863) Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-19 07:48:05,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:48:09,091 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:48:11,119 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:48:13,612 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:48:16,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:48:17,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:48:17,279 INFO L93 Difference]: Finished difference Result 7466 states and 11588 transitions. [2022-11-19 07:48:17,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:48:17,282 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 324 [2022-11-19 07:48:17,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:48:17,340 INFO L225 Difference]: With dead ends: 7466 [2022-11-19 07:48:17,341 INFO L226 Difference]: Without dead ends: 4951 [2022-11-19 07:48:17,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:48:17,368 INFO L413 NwaCegarLoop]: 4354 mSDtfsCounter, 3699 mSDsluCounter, 3449 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3701 SdHoareTripleChecker+Valid, 7803 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2022-11-19 07:48:17,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3701 Valid, 7803 Invalid, 564 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 558 Invalid, 4 Unknown, 0 Unchecked, 12.9s Time] [2022-11-19 07:48:17,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4951 states. [2022-11-19 07:48:17,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4951 to 4945. [2022-11-19 07:48:17,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4945 states, 2980 states have (on average 1.3624161073825503) internal successors, (4060), 3111 states have internal predecessors, (4060), 1679 states have call successors, (1679), 286 states have call predecessors, (1679), 285 states have return successors, (1694), 1663 states have call predecessors, (1694), 1677 states have call successors, (1694) [2022-11-19 07:48:17,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4945 states to 4945 states and 7433 transitions. [2022-11-19 07:48:17,752 INFO L78 Accepts]: Start accepts. Automaton has 4945 states and 7433 transitions. Word has length 324 [2022-11-19 07:48:17,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:48:17,757 INFO L495 AbstractCegarLoop]: Abstraction has 4945 states and 7433 transitions. [2022-11-19 07:48:17,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-19 07:48:17,758 INFO L276 IsEmpty]: Start isEmpty. Operand 4945 states and 7433 transitions. [2022-11-19 07:48:17,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2022-11-19 07:48:17,778 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:48:17,779 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 11, 11, 11, 11, 11, 11, 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] [2022-11-19 07:48:17,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:48:17,782 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:48:17,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:48:17,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1534907754, now seen corresponding path program 1 times [2022-11-19 07:48:17,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:48:17,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841270354] [2022-11-19 07:48:17,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:48:17,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:48:18,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:48:18,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1747 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1747 trivial. 0 not checked. [2022-11-19 07:48:18,779 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:48:18,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841270354] [2022-11-19 07:48:18,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841270354] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:48:18,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:48:18,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:48:18,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801728290] [2022-11-19 07:48:18,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:48:18,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:48:18,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:48:18,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:48:18,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:48:18,784 INFO L87 Difference]: Start difference. First operand 4945 states and 7433 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-19 07:48:22,361 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:48:24,382 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:48:28,079 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:48:30,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:48:30,522 INFO L93 Difference]: Finished difference Result 14605 states and 22670 transitions. [2022-11-19 07:48:30,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:48:30,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 347 [2022-11-19 07:48:30,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:48:30,599 INFO L225 Difference]: With dead ends: 14605 [2022-11-19 07:48:30,599 INFO L226 Difference]: Without dead ends: 9721 [2022-11-19 07:48:30,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:48:30,632 INFO L413 NwaCegarLoop]: 4507 mSDtfsCounter, 3873 mSDsluCounter, 3558 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 5 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3875 SdHoareTripleChecker+Valid, 8065 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:48:30,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3875 Valid, 8065 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 568 Invalid, 3 Unknown, 0 Unchecked, 11.2s Time] [2022-11-19 07:48:30,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9721 states. [2022-11-19 07:48:31,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9721 to 9686. [2022-11-19 07:48:31,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9686 states, 5841 states have (on average 1.3643211778805) internal successors, (7969), 6102 states have internal predecessors, (7969), 3281 states have call successors, (3281), 564 states have call predecessors, (3281), 563 states have return successors, (4032), 3249 states have call predecessors, (4032), 3279 states have call successors, (4032) [2022-11-19 07:48:31,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9686 states to 9686 states and 15282 transitions. [2022-11-19 07:48:31,551 INFO L78 Accepts]: Start accepts. Automaton has 9686 states and 15282 transitions. Word has length 347 [2022-11-19 07:48:31,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:48:31,553 INFO L495 AbstractCegarLoop]: Abstraction has 9686 states and 15282 transitions. [2022-11-19 07:48:31,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-19 07:48:31,555 INFO L276 IsEmpty]: Start isEmpty. Operand 9686 states and 15282 transitions. [2022-11-19 07:48:31,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2022-11-19 07:48:31,564 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:48:31,564 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 11, 11, 11, 11, 11, 11, 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] [2022-11-19 07:48:31,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:48:31,565 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:48:31,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:48:31,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1964803272, now seen corresponding path program 1 times [2022-11-19 07:48:31,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:48:31,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315406598] [2022-11-19 07:48:31,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:48:31,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:48:31,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:48:32,288 INFO L134 CoverageAnalysis]: Checked inductivity of 1747 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1747 trivial. 0 not checked. [2022-11-19 07:48:32,288 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:48:32,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315406598] [2022-11-19 07:48:32,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315406598] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:48:32,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:48:32,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:48:32,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10938045] [2022-11-19 07:48:32,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:48:32,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:48:32,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:48:32,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:48:32,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:48:32,294 INFO L87 Difference]: Start difference. First operand 9686 states and 15282 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-11-19 07:48:34,353 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:48:36,802 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:48:39,386 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:48:41,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:48:43,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:48:43,113 INFO L93 Difference]: Finished difference Result 19233 states and 30319 transitions. [2022-11-19 07:48:43,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:48:43,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 355 [2022-11-19 07:48:43,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:48:43,190 INFO L225 Difference]: With dead ends: 19233 [2022-11-19 07:48:43,190 INFO L226 Difference]: Without dead ends: 9608 [2022-11-19 07:48:43,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:48:43,244 INFO L413 NwaCegarLoop]: 3469 mSDtfsCounter, 3627 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3631 SdHoareTripleChecker+Valid, 3576 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:48:43,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3631 Valid, 3576 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 293 Invalid, 4 Unknown, 0 Unchecked, 10.4s Time] [2022-11-19 07:48:43,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9608 states. [2022-11-19 07:48:43,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9608 to 9601. [2022-11-19 07:48:43,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9601 states, 5768 states have (on average 1.359396671289875) internal successors, (7841), 6029 states have internal predecessors, (7841), 3261 states have call successors, (3261), 572 states have call predecessors, (3261), 571 states have return successors, (4008), 3229 states have call predecessors, (4008), 3259 states have call successors, (4008) [2022-11-19 07:48:43,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9601 states to 9601 states and 15110 transitions. [2022-11-19 07:48:43,881 INFO L78 Accepts]: Start accepts. Automaton has 9601 states and 15110 transitions. Word has length 355 [2022-11-19 07:48:43,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:48:43,883 INFO L495 AbstractCegarLoop]: Abstraction has 9601 states and 15110 transitions. [2022-11-19 07:48:43,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-11-19 07:48:43,883 INFO L276 IsEmpty]: Start isEmpty. Operand 9601 states and 15110 transitions. [2022-11-19 07:48:43,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2022-11-19 07:48:43,893 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:48:43,893 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 11, 11, 11, 11, 11, 11, 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] [2022-11-19 07:48:43,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:48:43,894 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:48:43,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:48:43,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1313627701, now seen corresponding path program 1 times [2022-11-19 07:48:43,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:48:43,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856033320] [2022-11-19 07:48:43,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:48:43,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:48:44,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:48:44,755 INFO L134 CoverageAnalysis]: Checked inductivity of 1747 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1747 trivial. 0 not checked. [2022-11-19 07:48:44,755 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:48:44,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856033320] [2022-11-19 07:48:44,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856033320] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:48:44,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:48:44,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:48:44,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418098687] [2022-11-19 07:48:44,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:48:44,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:48:44,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:48:44,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:48:44,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:48:44,760 INFO L87 Difference]: Start difference. First operand 9601 states and 15110 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-19 07:48:48,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:48:50,694 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:48:53,194 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:48:53,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:48:53,962 INFO L93 Difference]: Finished difference Result 18732 states and 29431 transitions. [2022-11-19 07:48:53,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:48:53,963 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 355 [2022-11-19 07:48:53,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:48:54,026 INFO L225 Difference]: With dead ends: 18732 [2022-11-19 07:48:54,026 INFO L226 Difference]: Without dead ends: 9205 [2022-11-19 07:48:54,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:48:54,079 INFO L413 NwaCegarLoop]: 3356 mSDtfsCounter, 3596 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3600 SdHoareTripleChecker+Valid, 3370 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-11-19 07:48:54,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3600 Valid, 3370 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 276 Invalid, 3 Unknown, 0 Unchecked, 8.7s Time] [2022-11-19 07:48:54,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9205 states. [2022-11-19 07:48:54,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9205 to 9191. [2022-11-19 07:48:54,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9191 states, 5515 states have (on average 1.357026291931097) internal successors, (7484), 5773 states have internal predecessors, (7484), 3126 states have call successors, (3126), 550 states have call predecessors, (3126), 549 states have return successors, (3788), 3093 states have call predecessors, (3788), 3124 states have call successors, (3788) [2022-11-19 07:48:54,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9191 states to 9191 states and 14398 transitions. [2022-11-19 07:48:54,788 INFO L78 Accepts]: Start accepts. Automaton has 9191 states and 14398 transitions. Word has length 355 [2022-11-19 07:48:54,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:48:54,789 INFO L495 AbstractCegarLoop]: Abstraction has 9191 states and 14398 transitions. [2022-11-19 07:48:54,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-19 07:48:54,790 INFO L276 IsEmpty]: Start isEmpty. Operand 9191 states and 14398 transitions. [2022-11-19 07:48:54,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2022-11-19 07:48:54,797 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:48:54,797 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 11, 11, 11, 11, 11, 11, 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] [2022-11-19 07:48:54,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 07:48:54,798 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:48:54,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:48:54,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1125886265, now seen corresponding path program 1 times [2022-11-19 07:48:54,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:48:54,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335539317] [2022-11-19 07:48:54,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:48:54,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:48:55,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:48:55,409 INFO L134 CoverageAnalysis]: Checked inductivity of 1747 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1747 trivial. 0 not checked. [2022-11-19 07:48:55,409 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:48:55,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335539317] [2022-11-19 07:48:55,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335539317] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:48:55,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:48:55,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:48:55,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711756063] [2022-11-19 07:48:55,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:48:55,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:48:55,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:48:55,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:48:55,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:48:55,415 INFO L87 Difference]: Start difference. First operand 9191 states and 14398 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2022-11-19 07:48:57,472 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:49:02,058 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:49:04,078 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:49:06,495 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:49:08,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:49:09,951 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:49:12,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:49:12,397 INFO L93 Difference]: Finished difference Result 27358 states and 42893 transitions. [2022-11-19 07:49:12,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:49:12,397 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 369 [2022-11-19 07:49:12,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:49:12,511 INFO L225 Difference]: With dead ends: 27358 [2022-11-19 07:49:12,512 INFO L226 Difference]: Without dead ends: 18241 [2022-11-19 07:49:12,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:49:12,554 INFO L413 NwaCegarLoop]: 5897 mSDtfsCounter, 3494 mSDsluCounter, 3339 mSDsCounter, 0 mSdLazyCounter, 760 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3497 SdHoareTripleChecker+Valid, 9236 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 760 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:49:12,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3497 Valid, 9236 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 760 Invalid, 3 Unknown, 0 Unchecked, 16.1s Time] [2022-11-19 07:49:12,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18241 states. [2022-11-19 07:49:13,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18241 to 18221. [2022-11-19 07:49:13,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18221 states, 10938 states have (on average 1.3581093435728653) internal successors, (14855), 11455 states have internal predecessors, (14855), 6195 states have call successors, (6195), 1088 states have call predecessors, (6195), 1087 states have return successors, (7517), 6129 states have call predecessors, (7517), 6193 states have call successors, (7517) [2022-11-19 07:49:13,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18221 states to 18221 states and 28567 transitions. [2022-11-19 07:49:13,923 INFO L78 Accepts]: Start accepts. Automaton has 18221 states and 28567 transitions. Word has length 369 [2022-11-19 07:49:13,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:49:13,924 INFO L495 AbstractCegarLoop]: Abstraction has 18221 states and 28567 transitions. [2022-11-19 07:49:13,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2022-11-19 07:49:13,925 INFO L276 IsEmpty]: Start isEmpty. Operand 18221 states and 28567 transitions. [2022-11-19 07:49:13,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2022-11-19 07:49:13,934 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:49:13,934 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 11, 11, 11, 11, 11, 11, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:49:13,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 07:49:13,934 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:49:13,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:49:13,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1653224059, now seen corresponding path program 1 times [2022-11-19 07:49:13,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:49:13,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637065433] [2022-11-19 07:49:13,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:49:13,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:49:14,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:49:14,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1924 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1917 trivial. 0 not checked. [2022-11-19 07:49:14,681 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:49:14,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637065433] [2022-11-19 07:49:14,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637065433] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:49:14,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:49:14,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:49:14,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125729983] [2022-11-19 07:49:14,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:49:14,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:49:14,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:49:14,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:49:14,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:49:14,684 INFO L87 Difference]: Start difference. First operand 18221 states and 28567 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2022-11-19 07:49:20,385 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:49:22,420 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:49:25,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:49:29,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:49:29,003 INFO L93 Difference]: Finished difference Result 45412 states and 71245 transitions. [2022-11-19 07:49:29,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:49:29,004 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) Word has length 398 [2022-11-19 07:49:29,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:49:29,176 INFO L225 Difference]: With dead ends: 45412 [2022-11-19 07:49:29,177 INFO L226 Difference]: Without dead ends: 27265 [2022-11-19 07:49:29,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:49:29,260 INFO L413 NwaCegarLoop]: 6366 mSDtfsCounter, 3498 mSDsluCounter, 3335 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 4 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3502 SdHoareTripleChecker+Valid, 9701 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:49:29,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3502 Valid, 9701 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 767 Invalid, 3 Unknown, 0 Unchecked, 13.0s Time] [2022-11-19 07:49:29,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27265 states. [2022-11-19 07:49:31,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27265 to 27241. [2022-11-19 07:49:31,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27241 states, 16369 states have (on average 1.358787952837681) internal successors, (22242), 17145 states have internal predecessors, (22242), 9254 states have call successors, (9254), 1618 states have call predecessors, (9254), 1617 states have return successors, (11240), 9155 states have call predecessors, (11240), 9252 states have call successors, (11240) [2022-11-19 07:49:31,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27241 states to 27241 states and 42736 transitions. [2022-11-19 07:49:31,212 INFO L78 Accepts]: Start accepts. Automaton has 27241 states and 42736 transitions. Word has length 398 [2022-11-19 07:49:31,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:49:31,213 INFO L495 AbstractCegarLoop]: Abstraction has 27241 states and 42736 transitions. [2022-11-19 07:49:31,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2022-11-19 07:49:31,214 INFO L276 IsEmpty]: Start isEmpty. Operand 27241 states and 42736 transitions. [2022-11-19 07:49:31,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2022-11-19 07:49:31,224 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:49:31,224 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 11, 11, 11, 11, 11, 11, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:49:31,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 07:49:31,224 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:49:31,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:49:31,225 INFO L85 PathProgramCache]: Analyzing trace with hash -24500609, now seen corresponding path program 1 times [2022-11-19 07:49:31,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:49:31,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119449677] [2022-11-19 07:49:31,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:49:31,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:49:31,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:49:33,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1940 trivial. 0 not checked. [2022-11-19 07:49:33,640 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:49:33,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119449677] [2022-11-19 07:49:33,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119449677] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:49:33,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:49:33,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-19 07:49:33,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952668291] [2022-11-19 07:49:33,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:49:33,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:49:33,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:49:33,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:49:33,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:49:33,644 INFO L87 Difference]: Start difference. First operand 27241 states and 42736 transitions. Second operand has 7 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 4 states have call successors, (47), 5 states have call predecessors, (47), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-11-19 07:49:35,716 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:49:40,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:49:43,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:49:47,342 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:49:49,356 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:49:51,363 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:49:53,147 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:49:55,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:49:57,162 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:50:03,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:50:03,138 INFO L93 Difference]: Finished difference Result 54390 states and 89004 transitions. [2022-11-19 07:50:03,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 07:50:03,139 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 4 states have call successors, (47), 5 states have call predecessors, (47), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 414 [2022-11-19 07:50:03,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:50:03,338 INFO L225 Difference]: With dead ends: 54390 [2022-11-19 07:50:03,338 INFO L226 Difference]: Without dead ends: 27223 [2022-11-19 07:50:03,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:50:03,491 INFO L413 NwaCegarLoop]: 3341 mSDtfsCounter, 24 mSDsluCounter, 16651 mSDsCounter, 0 mSdLazyCounter, 1729 mSolverCounterSat, 19 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 19992 SdHoareTripleChecker+Invalid, 1755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1729 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.8s IncrementalHoareTripleChecker+Time [2022-11-19 07:50:03,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 19992 Invalid, 1755 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [19 Valid, 1729 Invalid, 7 Unknown, 0 Unchecked, 27.8s Time] [2022-11-19 07:50:03,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27223 states. [2022-11-19 07:50:05,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27223 to 27175. [2022-11-19 07:50:05,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27175 states, 16369 states have (on average 1.3573217667542306) internal successors, (22218), 17139 states have internal predecessors, (22218), 9164 states have call successors, (9164), 1642 states have call predecessors, (9164), 1641 states have return successors, (11025), 9065 states have call predecessors, (11025), 9162 states have call successors, (11025) [2022-11-19 07:50:05,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27175 states to 27175 states and 42407 transitions. [2022-11-19 07:50:05,510 INFO L78 Accepts]: Start accepts. Automaton has 27175 states and 42407 transitions. Word has length 414 [2022-11-19 07:50:05,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:50:05,511 INFO L495 AbstractCegarLoop]: Abstraction has 27175 states and 42407 transitions. [2022-11-19 07:50:05,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 4 states have call successors, (47), 5 states have call predecessors, (47), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-11-19 07:50:05,512 INFO L276 IsEmpty]: Start isEmpty. Operand 27175 states and 42407 transitions. [2022-11-19 07:50:05,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2022-11-19 07:50:05,529 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:50:05,530 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 11, 11, 11, 11, 11, 11, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:50:05,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 07:50:05,530 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:50:05,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:50:05,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1218233663, now seen corresponding path program 1 times [2022-11-19 07:50:05,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:50:05,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403168896] [2022-11-19 07:50:05,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:50:05,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:50:05,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:50:06,567 INFO L134 CoverageAnalysis]: Checked inductivity of 2300 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2296 trivial. 0 not checked. [2022-11-19 07:50:06,567 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:50:06,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403168896] [2022-11-19 07:50:06,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403168896] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:50:06,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:50:06,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:50:06,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961838661] [2022-11-19 07:50:06,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:50:06,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:50:06,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:50:06,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:50:06,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:50:06,571 INFO L87 Difference]: Start difference. First operand 27175 states and 42407 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 3 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) [2022-11-19 07:50:11,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:50:14,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:50:18,501 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:50:20,512 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:50:24,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:50:24,004 INFO L93 Difference]: Finished difference Result 67391 states and 106266 transitions. [2022-11-19 07:50:24,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:50:24,005 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 3 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) Word has length 481 [2022-11-19 07:50:24,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:50:24,268 INFO L225 Difference]: With dead ends: 67391 [2022-11-19 07:50:24,268 INFO L226 Difference]: Without dead ends: 40290 [2022-11-19 07:50:24,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:50:24,407 INFO L413 NwaCegarLoop]: 5274 mSDtfsCounter, 3456 mSDsluCounter, 3425 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 10 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3458 SdHoareTripleChecker+Valid, 8699 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:50:24,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3458 Valid, 8699 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 684 Invalid, 4 Unknown, 0 Unchecked, 15.6s Time] [2022-11-19 07:50:24,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40290 states. [2022-11-19 07:50:26,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40290 to 40148. [2022-11-19 07:50:26,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40148 states, 24243 states have (on average 1.3584127376974797) internal successors, (32932), 25382 states have internal predecessors, (32932), 13491 states have call successors, (13491), 2414 states have call predecessors, (13491), 2413 states have return successors, (17350), 13347 states have call predecessors, (17350), 13489 states have call successors, (17350) [2022-11-19 07:50:27,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40148 states to 40148 states and 63773 transitions. [2022-11-19 07:50:27,073 INFO L78 Accepts]: Start accepts. Automaton has 40148 states and 63773 transitions. Word has length 481 [2022-11-19 07:50:27,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:50:27,075 INFO L495 AbstractCegarLoop]: Abstraction has 40148 states and 63773 transitions. [2022-11-19 07:50:27,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 3 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) [2022-11-19 07:50:27,075 INFO L276 IsEmpty]: Start isEmpty. Operand 40148 states and 63773 transitions. [2022-11-19 07:50:27,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2022-11-19 07:50:27,095 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:50:27,096 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 11, 11, 11, 11, 11, 11, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:50:27,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 07:50:27,096 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:50:27,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:50:27,097 INFO L85 PathProgramCache]: Analyzing trace with hash -2021597769, now seen corresponding path program 1 times [2022-11-19 07:50:27,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:50:27,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863325736] [2022-11-19 07:50:27,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:50:27,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:50:27,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:50:31,771 INFO L134 CoverageAnalysis]: Checked inductivity of 2308 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 2300 trivial. 0 not checked. [2022-11-19 07:50:31,772 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:50:31,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863325736] [2022-11-19 07:50:31,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863325736] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:50:31,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181273986] [2022-11-19 07:50:31,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:50:31,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:50:31,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6e2320-ca94-4755-a690-dbfcf922a982/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:50:31,780 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6e2320-ca94-4755-a690-dbfcf922a982/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:50:31,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6e2320-ca94-4755-a690-dbfcf922a982/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:50:34,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:50:34,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 5988 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 07:50:34,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:50:34,421 INFO L134 CoverageAnalysis]: Checked inductivity of 2308 backedges. 519 proven. 0 refuted. 0 times theorem prover too weak. 1789 trivial. 0 not checked. [2022-11-19 07:50:34,424 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:50:34,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181273986] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:50:34,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:50:34,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-11-19 07:50:34,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547669624] [2022-11-19 07:50:34,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:50:34,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:50:34,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:50:34,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:50:34,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-19 07:50:34,428 INFO L87 Difference]: Start difference. First operand 40148 states and 63773 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2022-11-19 07:50:36,961 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:50:38,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:50:45,293 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:50:49,285 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:50:53,694 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:50:55,705 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:50:57,537 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:50:59,549 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:51:00,856 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:51:08,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:51:08,129 INFO L93 Difference]: Finished difference Result 120342 states and 191181 transitions. [2022-11-19 07:51:08,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:51:08,129 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) Word has length 484 [2022-11-19 07:51:08,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:51:08,555 INFO L225 Difference]: With dead ends: 120342 [2022-11-19 07:51:08,555 INFO L226 Difference]: Without dead ends: 80151 [2022-11-19 07:51:08,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 483 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-11-19 07:51:08,702 INFO L413 NwaCegarLoop]: 6598 mSDtfsCounter, 3527 mSDsluCounter, 16529 mSDsCounter, 0 mSdLazyCounter, 1870 mSolverCounterSat, 8 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3532 SdHoareTripleChecker+Valid, 23127 SdHoareTripleChecker+Invalid, 1884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1870 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:51:08,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3532 Valid, 23127 Invalid, 1884 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8 Valid, 1870 Invalid, 6 Unknown, 0 Unchecked, 29.5s Time] [2022-11-19 07:51:08,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80151 states. [2022-11-19 07:51:12,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80151 to 66639. [2022-11-19 07:51:12,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66639 states, 40255 states have (on average 1.3580673208297105) internal successors, (54669), 42109 states have internal predecessors, (54669), 22407 states have call successors, (22407), 3977 states have call predecessors, (22407), 3976 states have return successors, (28850), 22153 states have call predecessors, (28850), 22405 states have call successors, (28850) [2022-11-19 07:51:12,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66639 states to 66639 states and 105926 transitions. [2022-11-19 07:51:12,998 INFO L78 Accepts]: Start accepts. Automaton has 66639 states and 105926 transitions. Word has length 484 [2022-11-19 07:51:12,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:51:12,999 INFO L495 AbstractCegarLoop]: Abstraction has 66639 states and 105926 transitions. [2022-11-19 07:51:13,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2022-11-19 07:51:13,000 INFO L276 IsEmpty]: Start isEmpty. Operand 66639 states and 105926 transitions. [2022-11-19 07:51:13,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2022-11-19 07:51:13,010 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:51:13,011 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 11, 11, 11, 11, 11, 11, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:51:13,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6e2320-ca94-4755-a690-dbfcf922a982/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 07:51:13,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6e2320-ca94-4755-a690-dbfcf922a982/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:51:13,224 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:51:13,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:51:13,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1992129385, now seen corresponding path program 1 times [2022-11-19 07:51:13,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:51:13,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697507062] [2022-11-19 07:51:13,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:51:13,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:51:13,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:51:17,642 INFO L134 CoverageAnalysis]: Checked inductivity of 2322 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 2312 trivial. 0 not checked. [2022-11-19 07:51:17,642 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:51:17,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697507062] [2022-11-19 07:51:17,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697507062] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:51:17,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586471719] [2022-11-19 07:51:17,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:51:17,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:51:17,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6e2320-ca94-4755-a690-dbfcf922a982/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:51:17,645 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6e2320-ca94-4755-a690-dbfcf922a982/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:51:17,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6e2320-ca94-4755-a690-dbfcf922a982/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 07:51:20,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:51:20,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 6159 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-19 07:51:20,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:51:23,980 INFO L134 CoverageAnalysis]: Checked inductivity of 2322 backedges. 12 proven. 370 refuted. 0 times theorem prover too weak. 1940 trivial. 0 not checked. [2022-11-19 07:51:23,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:51:26,943 INFO L134 CoverageAnalysis]: Checked inductivity of 2322 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2322 trivial. 0 not checked. [2022-11-19 07:51:26,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586471719] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-19 07:51:26,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:51:26,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9, 12] total 25 [2022-11-19 07:51:26,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545088305] [2022-11-19 07:51:26,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:51:26,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-19 07:51:26,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:51:26,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-19 07:51:26,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=497, Unknown=0, NotChecked=0, Total=600 [2022-11-19 07:51:26,946 INFO L87 Difference]: Start difference. First operand 66639 states and 105926 transitions. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 9 states have internal predecessors, (128), 5 states have call successors, (60), 5 states have call predecessors, (60), 2 states have return successors, (57), 5 states have call predecessors, (57), 4 states have call successors, (57) [2022-11-19 07:51:28,057 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:51:35,274 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:51:43,777 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:52:07,330 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:52:10,878 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:52:35,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:52:35,588 INFO L93 Difference]: Finished difference Result 171709 states and 280162 transitions. [2022-11-19 07:52:35,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-19 07:52:35,588 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 9 states have internal predecessors, (128), 5 states have call successors, (60), 5 states have call predecessors, (60), 2 states have return successors, (57), 5 states have call predecessors, (57), 4 states have call successors, (57) Word has length 500 [2022-11-19 07:52:35,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:52:36,717 INFO L225 Difference]: With dead ends: 171709 [2022-11-19 07:52:36,717 INFO L226 Difference]: Without dead ends: 171706 [2022-11-19 07:52:36,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1013 GetRequests, 981 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=166, Invalid=704, Unknown=0, NotChecked=0, Total=870 [2022-11-19 07:52:36,792 INFO L413 NwaCegarLoop]: 6773 mSDtfsCounter, 19203 mSDsluCounter, 8843 mSDsCounter, 0 mSdLazyCounter, 12978 mSolverCounterSat, 14362 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 54.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19829 SdHoareTripleChecker+Valid, 15616 SdHoareTripleChecker+Invalid, 27343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 14362 IncrementalHoareTripleChecker+Valid, 12978 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 59.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:52:36,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19829 Valid, 15616 Invalid, 27343 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [14362 Valid, 12978 Invalid, 3 Unknown, 0 Unchecked, 59.0s Time] [2022-11-19 07:52:36,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171706 states. [2022-11-19 07:52:47,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171706 to 168061. [2022-11-19 07:52:47,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168061 states, 101726 states have (on average 1.357666673220219) internal successors, (138110), 106264 states have internal predecessors, (138110), 56266 states have call successors, (56266), 9899 states have call predecessors, (56266), 10068 states have return successors, (79589), 55928 states have call predecessors, (79589), 56264 states have call successors, (79589) [2022-11-19 07:52:49,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168061 states to 168061 states and 273965 transitions. [2022-11-19 07:52:49,080 INFO L78 Accepts]: Start accepts. Automaton has 168061 states and 273965 transitions. Word has length 500 [2022-11-19 07:52:49,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:52:49,082 INFO L495 AbstractCegarLoop]: Abstraction has 168061 states and 273965 transitions. [2022-11-19 07:52:49,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 9 states have internal predecessors, (128), 5 states have call successors, (60), 5 states have call predecessors, (60), 2 states have return successors, (57), 5 states have call predecessors, (57), 4 states have call successors, (57) [2022-11-19 07:52:49,082 INFO L276 IsEmpty]: Start isEmpty. Operand 168061 states and 273965 transitions. [2022-11-19 07:52:49,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2022-11-19 07:52:49,097 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:52:49,097 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 11, 11, 11, 11, 11, 11, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:52:49,121 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6e2320-ca94-4755-a690-dbfcf922a982/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 07:52:49,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6e2320-ca94-4755-a690-dbfcf922a982/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:52:49,313 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:52:49,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:52:49,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1683089731, now seen corresponding path program 1 times [2022-11-19 07:52:49,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:52:49,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13441840] [2022-11-19 07:52:49,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:52:49,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:52:50,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:52:53,285 INFO L134 CoverageAnalysis]: Checked inductivity of 2319 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2309 trivial. 0 not checked. [2022-11-19 07:52:53,286 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:52:53,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13441840] [2022-11-19 07:52:53,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13441840] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:52:53,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:52:53,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-19 07:52:53,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514377008] [2022-11-19 07:52:53,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:52:53,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-19 07:52:53,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:52:53,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-19 07:52:53,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:52:53,290 INFO L87 Difference]: Start difference. First operand 168061 states and 273965 transitions. Second operand has 9 states, 7 states have (on average 20.428571428571427) internal successors, (143), 6 states have internal predecessors, (143), 2 states have call successors, (63), 2 states have call predecessors, (63), 5 states have return successors, (56), 5 states have call predecessors, (56), 2 states have call successors, (56)