./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.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_eba14fdc-9a20-4c79-8bfb-838112cc7566/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eba14fdc-9a20-4c79-8bfb-838112cc7566/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_eba14fdc-9a20-4c79-8bfb-838112cc7566/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eba14fdc-9a20-4c79-8bfb-838112cc7566/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eba14fdc-9a20-4c79-8bfb-838112cc7566/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_eba14fdc-9a20-4c79-8bfb-838112cc7566/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 5df375afe9fb68708289d9f3c6788a2547ede1538b0aa584ee561e48e9fb4c63 --- 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 06:46:05,211 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:46:05,217 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:46:05,250 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:46:05,251 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:46:05,256 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:46:05,259 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:46:05,268 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:46:05,271 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:46:05,281 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:46:05,282 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:46:05,284 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:46:05,285 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:46:05,288 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:46:05,290 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:46:05,293 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:46:05,294 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:46:05,295 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:46:05,297 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:46:05,301 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:46:05,308 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:46:05,310 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:46:05,311 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:46:05,314 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:46:05,321 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:46:05,321 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:46:05,321 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:46:05,322 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:46:05,323 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:46:05,324 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:46:05,324 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:46:05,325 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:46:05,326 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:46:05,327 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:46:05,328 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:46:05,328 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:46:05,329 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:46:05,329 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:46:05,329 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:46:05,331 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:46:05,331 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:46:05,338 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eba14fdc-9a20-4c79-8bfb-838112cc7566/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 06:46:05,386 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:46:05,389 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:46:05,390 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:46:05,391 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:46:05,392 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:46:05,392 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:46:05,392 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:46:05,393 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:46:05,393 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:46:05,393 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 06:46:05,394 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:46:05,395 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:46:05,395 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 06:46:05,395 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 06:46:05,395 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:46:05,396 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 06:46:05,396 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 06:46:05,396 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 06:46:05,397 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:46:05,397 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:46:05,398 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:46:05,398 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:46:05,398 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:46:05,400 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:46:05,400 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:46:05,401 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:46:05,401 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:46:05,401 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:46:05,401 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:46:05,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:46:05,402 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:46:05,403 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 06:46:05,403 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:46:05,404 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:46:05,404 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 06:46:05,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 06:46:05,405 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:46:05,405 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:46:05,405 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_eba14fdc-9a20-4c79-8bfb-838112cc7566/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eba14fdc-9a20-4c79-8bfb-838112cc7566/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5df375afe9fb68708289d9f3c6788a2547ede1538b0aa584ee561e48e9fb4c63 [2022-11-19 06:46:05,748 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:46:05,775 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:46:05,778 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:46:05,779 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:46:05,780 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:46:05,782 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eba14fdc-9a20-4c79-8bfb-838112cc7566/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i [2022-11-19 06:46:05,865 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eba14fdc-9a20-4c79-8bfb-838112cc7566/bin/utaipan-I9t0OCRTmS/data/a03af2bb8/e93c146b76e64f51932a652665d2c862/FLAG1f7c6160c [2022-11-19 06:46:07,210 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:46:07,211 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eba14fdc-9a20-4c79-8bfb-838112cc7566/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i [2022-11-19 06:46:07,274 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eba14fdc-9a20-4c79-8bfb-838112cc7566/bin/utaipan-I9t0OCRTmS/data/a03af2bb8/e93c146b76e64f51932a652665d2c862/FLAG1f7c6160c [2022-11-19 06:46:07,378 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eba14fdc-9a20-4c79-8bfb-838112cc7566/bin/utaipan-I9t0OCRTmS/data/a03af2bb8/e93c146b76e64f51932a652665d2c862 [2022-11-19 06:46:07,381 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:46:07,383 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:46:07,387 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:46:07,387 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:46:07,392 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:46:07,393 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:46:07" (1/1) ... [2022-11-19 06:46:07,394 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6740c3fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:46:07, skipping insertion in model container [2022-11-19 06:46:07,395 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:46:07" (1/1) ... [2022-11-19 06:46:07,404 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:46:07,654 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:46:09,282 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_eba14fdc-9a20-4c79-8bfb-838112cc7566/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i[209494,209507] [2022-11-19 06:46:11,386 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:46:11,482 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:46:11,742 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_eba14fdc-9a20-4c79-8bfb-838112cc7566/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i[209494,209507] [2022-11-19 06:46:12,092 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:46:12,269 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:46:12,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:46:12 WrapperNode [2022-11-19 06:46:12,270 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:46:12,271 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:46:12,271 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:46:12,272 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:46:12,280 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:46:12" (1/1) ... [2022-11-19 06:46:12,444 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:46:12" (1/1) ... [2022-11-19 06:46:12,823 INFO L138 Inliner]: procedures = 382, calls = 4336, calls flagged for inlining = 180, calls inlined = 177, statements flattened = 8280 [2022-11-19 06:46:12,825 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:46:12,826 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:46:12,827 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:46:12,827 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:46:12,839 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:46:12" (1/1) ... [2022-11-19 06:46:12,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:46:12" (1/1) ... [2022-11-19 06:46:12,927 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:46:12" (1/1) ... [2022-11-19 06:46:12,929 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:46:12" (1/1) ... [2022-11-19 06:46:13,294 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:46:12" (1/1) ... [2022-11-19 06:46:13,329 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:46:12" (1/1) ... [2022-11-19 06:46:13,373 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:46:12" (1/1) ... [2022-11-19 06:46:13,393 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:46:12" (1/1) ... [2022-11-19 06:46:13,583 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:46:13,584 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:46:13,585 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:46:13,585 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:46:13,586 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:46:12" (1/1) ... [2022-11-19 06:46:13,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:46:13,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eba14fdc-9a20-4c79-8bfb-838112cc7566/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:46:13,624 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eba14fdc-9a20-4c79-8bfb-838112cc7566/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:46:13,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eba14fdc-9a20-4c79-8bfb-838112cc7566/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:46:13,675 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_ioread8 [2022-11-19 06:46:13,676 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_ioread8 [2022-11-19 06:46:13,676 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_12 [2022-11-19 06:46:13,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_12 [2022-11-19 06:46:13,676 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_frequency_to_channel [2022-11-19 06:46:13,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_frequency_to_channel [2022-11-19 06:46:13,676 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-19 06:46:13,676 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-19 06:46:13,677 INFO L130 BoogieDeclarations]: Found specification of procedure write_sa2400 [2022-11-19 06:46:13,677 INFO L138 BoogieDeclarations]: Found implementation of procedure write_sa2400 [2022-11-19 06:46:13,677 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_free_tx_ring [2022-11-19 06:46:13,677 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_free_tx_ring [2022-11-19 06:46:13,677 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_iowrite8 [2022-11-19 06:46:13,677 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_iowrite8 [2022-11-19 06:46:13,678 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-19 06:46:13,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-19 06:46:13,678 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_conf_tx [2022-11-19 06:46:13,678 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_conf_tx [2022-11-19 06:46:13,678 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-19 06:46:13,678 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-19 06:46:13,679 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 06:46:13,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 06:46:13,679 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_stop [2022-11-19 06:46:13,679 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_stop [2022-11-19 06:46:13,679 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2022-11-19 06:46:13,679 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2022-11-19 06:46:13,680 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_5 [2022-11-19 06:46:13,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_5 [2022-11-19 06:46:13,680 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_4 [2022-11-19 06:46:13,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_4 [2022-11-19 06:46:13,680 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_3 [2022-11-19 06:46:13,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_3 [2022-11-19 06:46:13,681 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 06:46:13,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 06:46:13,681 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_rf_init [2022-11-19 06:46:13,681 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_rf_init [2022-11-19 06:46:13,681 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_8 [2022-11-19 06:46:13,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_8 [2022-11-19 06:46:13,681 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_rf_init [2022-11-19 06:46:13,682 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_rf_init [2022-11-19 06:46:13,682 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_7 [2022-11-19 06:46:13,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_7 [2022-11-19 06:46:13,682 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_6 [2022-11-19 06:46:13,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_6 [2022-11-19 06:46:13,682 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_rf_calc_rssi [2022-11-19 06:46:13,683 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_rf_calc_rssi [2022-11-19 06:46:13,683 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225z2_rf_init [2022-11-19 06:46:13,683 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225z2_rf_init [2022-11-19 06:46:13,683 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_remove [2022-11-19 06:46:13,683 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_remove [2022-11-19 06:46:13,683 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225se_rf_set_channel [2022-11-19 06:46:13,683 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225se_rf_set_channel [2022-11-19 06:46:13,684 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2022-11-19 06:46:13,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2022-11-19 06:46:13,684 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8187se_rf_writereg [2022-11-19 06:46:13,684 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8187se_rf_writereg [2022-11-19 06:46:13,684 INFO L130 BoogieDeclarations]: Found specification of procedure usleep_range [2022-11-19 06:46:13,684 INFO L138 BoogieDeclarations]: Found implementation of procedure usleep_range [2022-11-19 06:46:13,684 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_generic_frame_duration [2022-11-19 06:46:13,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_generic_frame_duration [2022-11-19 06:46:13,685 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-19 06:46:13,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-19 06:46:13,685 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-19 06:46:13,685 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-19 06:46:13,685 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-19 06:46:13,685 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-19 06:46:13,685 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_rf_stop [2022-11-19 06:46:13,686 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_rf_stop [2022-11-19 06:46:13,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-19 06:46:13,686 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-19 06:46:13,686 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_2 [2022-11-19 06:46:13,686 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_2 [2022-11-19 06:46:13,686 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-19 06:46:13,687 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-19 06:46:13,687 INFO L130 BoogieDeclarations]: Found specification of procedure fls [2022-11-19 06:46:13,687 INFO L138 BoogieDeclarations]: Found implementation of procedure fls [2022-11-19 06:46:13,687 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_int_disable [2022-11-19 06:46:13,687 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_int_disable [2022-11-19 06:46:13,687 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-19 06:46:13,687 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-19 06:46:13,687 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2022-11-19 06:46:13,688 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2022-11-19 06:46:13,688 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-19 06:46:13,688 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-19 06:46:13,688 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_write [2022-11-19 06:46:13,688 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_write [2022-11-19 06:46:13,688 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_write_phy_antenna [2022-11-19 06:46:13,688 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_write_phy_antenna [2022-11-19 06:46:13,689 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 06:46:13,689 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_rf_init [2022-11-19 06:46:13,689 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_rf_init [2022-11-19 06:46:13,689 INFO L130 BoogieDeclarations]: Found specification of procedure grf5101_write_phy_antenna [2022-11-19 06:46:13,689 INFO L138 BoogieDeclarations]: Found implementation of procedure grf5101_write_phy_antenna [2022-11-19 06:46:13,689 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_ioread32 [2022-11-19 06:46:13,689 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_ioread32 [2022-11-19 06:46:13,689 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 06:46:13,690 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225se_rf_stop [2022-11-19 06:46:13,690 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225se_rf_stop [2022-11-19 06:46:13,690 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2022-11-19 06:46:13,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2022-11-19 06:46:13,690 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_free_rx_ring [2022-11-19 06:46:13,690 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_free_rx_ring [2022-11-19 06:46:13,690 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_bss_info_changed [2022-11-19 06:46:13,691 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_bss_info_changed [2022-11-19 06:46:13,691 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2022-11-19 06:46:13,691 INFO L130 BoogieDeclarations]: Found specification of procedure grf5101_rf_calc_rssi [2022-11-19 06:46:13,691 INFO L138 BoogieDeclarations]: Found implementation of procedure grf5101_rf_calc_rssi [2022-11-19 06:46:13,691 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-19 06:46:13,691 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-19 06:46:13,691 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-19 06:46:13,692 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-19 06:46:13,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 06:46:13,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 06:46:13,692 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225z2_rf_set_tx_power [2022-11-19 06:46:13,692 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225z2_rf_set_tx_power [2022-11-19 06:46:13,692 INFO L130 BoogieDeclarations]: Found specification of procedure grf5101_rf_init [2022-11-19 06:46:13,693 INFO L138 BoogieDeclarations]: Found implementation of procedure grf5101_rf_init [2022-11-19 06:46:13,693 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_ioread16 [2022-11-19 06:46:13,693 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_ioread16 [2022-11-19 06:46:13,693 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-19 06:46:13,693 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-19 06:46:13,693 INFO L130 BoogieDeclarations]: Found specification of procedure ldv___skb_dequeue_14 [2022-11-19 06:46:13,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv___skb_dequeue_14 [2022-11-19 06:46:13,694 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-19 06:46:13,694 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-19 06:46:13,694 INFO L130 BoogieDeclarations]: Found specification of procedure write_max2820 [2022-11-19 06:46:13,694 INFO L138 BoogieDeclarations]: Found implementation of procedure write_max2820 [2022-11-19 06:46:13,694 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_set_anaparam [2022-11-19 06:46:13,694 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_set_anaparam [2022-11-19 06:46:13,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-19 06:46:13,695 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-19 06:46:13,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-19 06:46:13,695 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_get_tx_rate [2022-11-19 06:46:13,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_get_tx_rate [2022-11-19 06:46:13,695 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-19 06:46:13,695 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-19 06:46:13,696 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-19 06:46:13,696 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-19 06:46:13,696 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_rf_stop [2022-11-19 06:46:13,696 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_rf_stop [2022-11-19 06:46:13,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-19 06:46:13,696 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_rf_stop [2022-11-19 06:46:13,696 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_rf_stop [2022-11-19 06:46:13,697 INFO L130 BoogieDeclarations]: Found specification of procedure write_grf5101 [2022-11-19 06:46:13,697 INFO L138 BoogieDeclarations]: Found implementation of procedure write_grf5101 [2022-11-19 06:46:13,697 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8187se_rf_readreg [2022-11-19 06:46:13,697 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8187se_rf_readreg [2022-11-19 06:46:13,697 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 06:46:13,697 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-19 06:46:13,697 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-19 06:46:13,698 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_remove_interface [2022-11-19 06:46:13,698 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_remove_interface [2022-11-19 06:46:13,698 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_get_tsf [2022-11-19 06:46:13,698 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_get_tsf [2022-11-19 06:46:13,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-19 06:46:13,698 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-19 06:46:13,698 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_mapping_error [2022-11-19 06:46:13,699 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_mapping_error [2022-11-19 06:46:13,699 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2022-11-19 06:46:13,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2022-11-19 06:46:13,699 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_read [2022-11-19 06:46:13,699 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_read [2022-11-19 06:46:13,699 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_handle_rx [2022-11-19 06:46:13,699 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_handle_rx [2022-11-19 06:46:13,700 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_2 [2022-11-19 06:46:13,700 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_2 [2022-11-19 06:46:13,700 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iomap [2022-11-19 06:46:13,700 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iomap [2022-11-19 06:46:13,700 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_add_interface [2022-11-19 06:46:13,700 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_add_interface [2022-11-19 06:46:13,700 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_rf_set_channel [2022-11-19 06:46:13,701 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_rf_set_channel [2022-11-19 06:46:13,701 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_write_phy_antenna [2022-11-19 06:46:13,701 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_write_phy_antenna [2022-11-19 06:46:13,701 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-19 06:46:13,702 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-19 06:46:13,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 06:46:13,702 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-19 06:46:13,702 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-19 06:46:13,702 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_rf_set_channel [2022-11-19 06:46:13,702 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_rf_set_channel [2022-11-19 06:46:13,702 INFO L130 BoogieDeclarations]: Found specification of procedure eeprom_93cx6_read [2022-11-19 06:46:13,703 INFO L138 BoogieDeclarations]: Found implementation of procedure eeprom_93cx6_read [2022-11-19 06:46:13,703 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_rf_set_tx_power [2022-11-19 06:46:13,703 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_rf_set_tx_power [2022-11-19 06:46:13,703 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 06:46:13,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 06:46:13,703 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_handle_tx [2022-11-19 06:46:13,703 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_handle_tx [2022-11-19 06:46:13,704 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u16 [2022-11-19 06:46:13,704 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_configure_filter [2022-11-19 06:46:13,704 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_configure_filter [2022-11-19 06:46:13,704 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_rf_set_channel [2022-11-19 06:46:13,704 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_rf_set_channel [2022-11-19 06:46:13,704 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8187se_conf_ac_parm [2022-11-19 06:46:13,704 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8187se_conf_ac_parm [2022-11-19 06:46:13,705 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 06:46:13,705 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 06:46:13,705 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2022-11-19 06:46:13,705 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2022-11-19 06:46:13,705 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_free_hw [2022-11-19 06:46:13,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_free_hw [2022-11-19 06:46:13,705 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_write_phy_cck [2022-11-19 06:46:13,706 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_write_phy_cck [2022-11-19 06:46:13,706 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-19 06:46:13,706 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-19 06:46:13,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 06:46:13,706 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-11-19 06:46:13,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-11-19 06:46:13,706 INFO L130 BoogieDeclarations]: Found specification of procedure IEEE80211_SKB_RXCB [2022-11-19 06:46:13,707 INFO L138 BoogieDeclarations]: Found implementation of procedure IEEE80211_SKB_RXCB [2022-11-19 06:46:13,707 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-19 06:46:13,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-19 06:46:13,707 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_2 [2022-11-19 06:46:13,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_2 [2022-11-19 06:46:13,707 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_get_rts_cts_rate [2022-11-19 06:46:13,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_get_rts_cts_rate [2022-11-19 06:46:13,708 INFO L130 BoogieDeclarations]: Found specification of procedure grf5101_rf_stop [2022-11-19 06:46:13,708 INFO L138 BoogieDeclarations]: Found implementation of procedure grf5101_rf_stop [2022-11-19 06:46:13,708 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_len [2022-11-19 06:46:13,708 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_len [2022-11-19 06:46:13,708 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225se_rf_init [2022-11-19 06:46:13,708 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225se_rf_init [2022-11-19 06:46:13,708 INFO L130 BoogieDeclarations]: Found specification of procedure grf5101_rf_set_channel [2022-11-19 06:46:13,708 INFO L138 BoogieDeclarations]: Found implementation of procedure grf5101_rf_set_channel [2022-11-19 06:46:13,709 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_prepare_multicast [2022-11-19 06:46:13,709 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_prepare_multicast [2022-11-19 06:46:13,709 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-11-19 06:46:13,709 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-11-19 06:46:13,709 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-11-19 06:46:13,709 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-11-19 06:46:13,709 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-19 06:46:13,710 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-19 06:46:13,710 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_iowrite32 [2022-11-19 06:46:13,710 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_iowrite32 [2022-11-19 06:46:13,710 INFO L130 BoogieDeclarations]: Found specification of procedure eeprom_93cx6_multiread [2022-11-19 06:46:13,710 INFO L138 BoogieDeclarations]: Found implementation of procedure eeprom_93cx6_multiread [2022-11-19 06:46:13,710 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_set_anaparam2 [2022-11-19 06:46:13,710 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_set_anaparam2 [2022-11-19 06:46:13,711 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_write_phy_ofdm [2022-11-19 06:46:13,711 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_write_phy_ofdm [2022-11-19 06:46:13,711 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_rf_calc_rssi [2022-11-19 06:46:13,711 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_rf_calc_rssi [2022-11-19 06:46:13,711 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_write_phy [2022-11-19 06:46:13,711 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_write_phy [2022-11-19 06:46:13,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 06:46:13,711 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_config [2022-11-19 06:46:13,712 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_config [2022-11-19 06:46:13,712 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8187se_three_wire_io [2022-11-19 06:46:13,712 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8187se_three_wire_io [2022-11-19 06:46:13,712 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_conf_basic_rates [2022-11-19 06:46:13,712 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_conf_basic_rates [2022-11-19 06:46:13,712 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_tx [2022-11-19 06:46:13,712 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_tx [2022-11-19 06:46:13,712 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_iowrite16 [2022-11-19 06:46:13,713 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_iowrite16 [2022-11-19 06:46:13,713 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2022-11-19 06:46:13,713 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2022-11-19 06:46:13,713 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u8 [2022-11-19 06:46:13,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:46:13,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:46:13,713 INFO L130 BoogieDeclarations]: Found specification of procedure IEEE80211_SKB_CB [2022-11-19 06:46:13,713 INFO L138 BoogieDeclarations]: Found implementation of procedure IEEE80211_SKB_CB [2022-11-19 06:46:15,122 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:46:15,127 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:46:15,837 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 06:46:25,720 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:46:29,883 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:46:29,884 INFO L300 CfgBuilder]: Removed 81 assume(true) statements. [2022-11-19 06:46:29,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:46:29 BoogieIcfgContainer [2022-11-19 06:46:29,897 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:46:29,903 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:46:29,903 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:46:29,907 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:46:29,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:46:07" (1/3) ... [2022-11-19 06:46:29,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a12c729 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:46:29, skipping insertion in model container [2022-11-19 06:46:29,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:46:12" (2/3) ... [2022-11-19 06:46:29,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a12c729 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:46:29, skipping insertion in model container [2022-11-19 06:46:29,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:46:29" (3/3) ... [2022-11-19 06:46:29,914 INFO L112 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i [2022-11-19 06:46:29,939 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:46:29,939 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 06:46:30,095 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:46:30,104 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;@6bf7aae6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:46:30,104 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 06:46:30,123 INFO L276 IsEmpty]: Start isEmpty. Operand has 3174 states, 1626 states have (on average 1.3105781057810577) internal successors, (2131), 1781 states have internal predecessors, (2131), 1503 states have call successors, (1503), 122 states have call predecessors, (1503), 121 states have return successors, (1489), 1454 states have call predecessors, (1489), 1489 states have call successors, (1489) [2022-11-19 06:46:30,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-19 06:46:30,148 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:46:30,149 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 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] [2022-11-19 06:46:30,150 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:46:30,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:46:30,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1649581111, now seen corresponding path program 1 times [2022-11-19 06:46:30,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:46:30,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48438474] [2022-11-19 06:46:30,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:46:30,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:46:30,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:46:31,444 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-11-19 06:46:31,448 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:46:31,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48438474] [2022-11-19 06:46:31,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48438474] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:46:31,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:46:31,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:46:31,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197383466] [2022-11-19 06:46:31,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:46:31,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:46:31,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:46:31,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:46:31,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:46:31,676 INFO L87 Difference]: Start difference. First operand has 3174 states, 1626 states have (on average 1.3105781057810577) internal successors, (2131), 1781 states have internal predecessors, (2131), 1503 states have call successors, (1503), 122 states have call predecessors, (1503), 121 states have return successors, (1489), 1454 states have call predecessors, (1489), 1489 states have call successors, (1489) Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-11-19 06:46:36,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 06:46:38,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:46:38,779 INFO L93 Difference]: Finished difference Result 8979 states and 14569 transitions. [2022-11-19 06:46:38,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:46:38,782 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 70 [2022-11-19 06:46:38,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:46:38,884 INFO L225 Difference]: With dead ends: 8979 [2022-11-19 06:46:38,884 INFO L226 Difference]: Without dead ends: 5786 [2022-11-19 06:46:38,926 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 06:46:38,931 INFO L413 NwaCegarLoop]: 5796 mSDtfsCounter, 4557 mSDsluCounter, 4395 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4560 SdHoareTripleChecker+Valid, 10191 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-19 06:46:38,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4560 Valid, 10191 Invalid, 512 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 502 Invalid, 1 Unknown, 0 Unchecked, 6.4s Time] [2022-11-19 06:46:38,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5786 states. [2022-11-19 06:46:39,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5786 to 5785. [2022-11-19 06:46:39,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5785 states, 2745 states have (on average 1.2932604735883424) internal successors, (3550), 2886 states have internal predecessors, (3550), 2799 states have call successors, (2799), 241 states have call predecessors, (2799), 240 states have return successors, (2801), 2727 states have call predecessors, (2801), 2798 states have call successors, (2801) [2022-11-19 06:46:39,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5785 states to 5785 states and 9150 transitions. [2022-11-19 06:46:39,965 INFO L78 Accepts]: Start accepts. Automaton has 5785 states and 9150 transitions. Word has length 70 [2022-11-19 06:46:39,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:46:39,969 INFO L495 AbstractCegarLoop]: Abstraction has 5785 states and 9150 transitions. [2022-11-19 06:46:39,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-11-19 06:46:39,970 INFO L276 IsEmpty]: Start isEmpty. Operand 5785 states and 9150 transitions. [2022-11-19 06:46:39,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-19 06:46:39,984 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:46:39,984 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 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] [2022-11-19 06:46:39,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 06:46:39,985 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:46:39,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:46:39,986 INFO L85 PathProgramCache]: Analyzing trace with hash 314086229, now seen corresponding path program 1 times [2022-11-19 06:46:39,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:46:39,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975280297] [2022-11-19 06:46:39,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:46:39,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:46:40,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:46:41,323 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-11-19 06:46:41,324 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:46:41,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975280297] [2022-11-19 06:46:41,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975280297] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:46:41,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:46:41,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 06:46:41,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180927409] [2022-11-19 06:46:41,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:46:41,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:46:41,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:46:41,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:46:41,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:46:41,329 INFO L87 Difference]: Start difference. First operand 5785 states and 9150 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-19 06:46:44,097 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:46:48,755 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 06:46:50,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:46:50,149 INFO L93 Difference]: Finished difference Result 11526 states and 18318 transitions. [2022-11-19 06:46:50,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:46:50,150 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 73 [2022-11-19 06:46:50,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:46:50,284 INFO L225 Difference]: With dead ends: 11526 [2022-11-19 06:46:50,284 INFO L226 Difference]: Without dead ends: 11521 [2022-11-19 06:46:50,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:46:50,303 INFO L413 NwaCegarLoop]: 5974 mSDtfsCounter, 4558 mSDsluCounter, 10350 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4560 SdHoareTripleChecker+Valid, 16324 SdHoareTripleChecker+Invalid, 790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:46:50,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4560 Valid, 16324 Invalid, 790 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 787 Invalid, 2 Unknown, 0 Unchecked, 8.1s Time] [2022-11-19 06:46:50,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11521 states. [2022-11-19 06:46:52,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11521 to 11510. [2022-11-19 06:46:52,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11510 states, 5453 states have (on average 1.2941500091692646) internal successors, (7057), 5736 states have internal predecessors, (7057), 5576 states have call successors, (5576), 481 states have call predecessors, (5576), 480 states have return successors, (5665), 5432 states have call predecessors, (5665), 5575 states have call successors, (5665) [2022-11-19 06:46:52,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11510 states to 11510 states and 18298 transitions. [2022-11-19 06:46:52,235 INFO L78 Accepts]: Start accepts. Automaton has 11510 states and 18298 transitions. Word has length 73 [2022-11-19 06:46:52,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:46:52,240 INFO L495 AbstractCegarLoop]: Abstraction has 11510 states and 18298 transitions. [2022-11-19 06:46:52,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-19 06:46:52,241 INFO L276 IsEmpty]: Start isEmpty. Operand 11510 states and 18298 transitions. [2022-11-19 06:46:52,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-19 06:46:52,267 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:46:52,268 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 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] [2022-11-19 06:46:52,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 06:46:52,272 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:46:52,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:46:52,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1388185068, now seen corresponding path program 1 times [2022-11-19 06:46:52,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:46:52,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163734116] [2022-11-19 06:46:52,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:46:52,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:46:52,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:46:52,678 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:46:52,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163734116] [2022-11-19 06:46:52,679 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-19 06:46:52,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523026639] [2022-11-19 06:46:52,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:46:52,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:46:52,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eba14fdc-9a20-4c79-8bfb-838112cc7566/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:46:52,686 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eba14fdc-9a20-4c79-8bfb-838112cc7566/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:46:52,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eba14fdc-9a20-4c79-8bfb-838112cc7566/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 06:46:54,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:46:54,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 4720 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 06:46:54,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:46:55,076 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-11-19 06:46:55,076 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:46:55,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523026639] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:46:55,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:46:55,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:46:55,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758478006] [2022-11-19 06:46:55,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:46:55,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:46:55,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:46:55,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:46:55,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:46:55,081 INFO L87 Difference]: Start difference. First operand 11510 states and 18298 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-19 06:46:58,091 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:47:01,869 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 06:47:02,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:47:02,776 INFO L93 Difference]: Finished difference Result 31698 states and 50618 transitions. [2022-11-19 06:47:02,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:47:02,777 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 130 [2022-11-19 06:47:02,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:47:03,001 INFO L225 Difference]: With dead ends: 31698 [2022-11-19 06:47:03,001 INFO L226 Difference]: Without dead ends: 20207 [2022-11-19 06:47:03,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 128 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 06:47:03,334 INFO L413 NwaCegarLoop]: 5458 mSDtfsCounter, 3504 mSDsluCounter, 4281 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 21 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3504 SdHoareTripleChecker+Valid, 9739 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-11-19 06:47:03,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3504 Valid, 9739 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 570 Invalid, 1 Unknown, 0 Unchecked, 6.6s Time] [2022-11-19 06:47:03,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20207 states. [2022-11-19 06:47:06,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20207 to 20200. [2022-11-19 06:47:06,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20200 states, 9325 states have (on average 1.296621983914209) internal successors, (12091), 9774 states have internal predecessors, (12091), 10018 states have call successors, (10018), 857 states have call predecessors, (10018), 856 states have return successors, (10153), 9816 states have call predecessors, (10153), 10017 states have call successors, (10153) [2022-11-19 06:47:06,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20200 states to 20200 states and 32262 transitions. [2022-11-19 06:47:06,433 INFO L78 Accepts]: Start accepts. Automaton has 20200 states and 32262 transitions. Word has length 130 [2022-11-19 06:47:06,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:47:06,434 INFO L495 AbstractCegarLoop]: Abstraction has 20200 states and 32262 transitions. [2022-11-19 06:47:06,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-19 06:47:06,434 INFO L276 IsEmpty]: Start isEmpty. Operand 20200 states and 32262 transitions. [2022-11-19 06:47:06,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-19 06:47:06,454 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:47:06,455 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 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] [2022-11-19 06:47:06,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eba14fdc-9a20-4c79-8bfb-838112cc7566/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 06:47:06,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eba14fdc-9a20-4c79-8bfb-838112cc7566/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:47:06,674 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:47:06,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:47:06,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1749267968, now seen corresponding path program 1 times [2022-11-19 06:47:06,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:47:06,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196303563] [2022-11-19 06:47:06,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:47:06,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:47:06,885 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:47:06,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1137902649] [2022-11-19 06:47:06,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:47:06,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:47:06,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eba14fdc-9a20-4c79-8bfb-838112cc7566/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:47:06,887 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eba14fdc-9a20-4c79-8bfb-838112cc7566/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:47:06,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eba14fdc-9a20-4c79-8bfb-838112cc7566/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 06:47:09,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:47:09,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 5009 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 06:47:09,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:47:09,692 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-11-19 06:47:09,692 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:47:09,693 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:47:09,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196303563] [2022-11-19 06:47:09,693 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 06:47:09,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137902649] [2022-11-19 06:47:09,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137902649] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:47:09,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:47:09,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 06:47:09,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963708340] [2022-11-19 06:47:09,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:47:09,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:47:09,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:47:09,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:47:09,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:47:09,696 INFO L87 Difference]: Start difference. First operand 20200 states and 32262 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-19 06:47:17,583 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:47:21,480 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 06:47:23,830 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:47:24,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:47:32,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:47:32,451 INFO L93 Difference]: Finished difference Result 60549 states and 96742 transitions. [2022-11-19 06:47:32,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 06:47:32,451 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 152 [2022-11-19 06:47:32,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:47:32,971 INFO L225 Difference]: With dead ends: 60549 [2022-11-19 06:47:32,972 INFO L226 Difference]: Without dead ends: 40368 [2022-11-19 06:47:33,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-19 06:47:33,138 INFO L413 NwaCegarLoop]: 5772 mSDtfsCounter, 4509 mSDsluCounter, 8836 mSDsCounter, 0 mSdLazyCounter, 6605 mSolverCounterSat, 15 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4518 SdHoareTripleChecker+Valid, 14608 SdHoareTripleChecker+Invalid, 6622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 6605 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.3s IncrementalHoareTripleChecker+Time [2022-11-19 06:47:33,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4518 Valid, 14608 Invalid, 6622 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 6605 Invalid, 2 Unknown, 0 Unchecked, 20.3s Time] [2022-11-19 06:47:33,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40368 states. [2022-11-19 06:47:38,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40368 to 40348. [2022-11-19 06:47:38,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40348 states, 18625 states have (on average 1.29696644295302) internal successors, (24156), 19524 states have internal predecessors, (24156), 20006 states have call successors, (20006), 1709 states have call predecessors, (20006), 1716 states have return successors, (20307), 19602 states have call predecessors, (20307), 20005 states have call successors, (20307) [2022-11-19 06:47:38,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40348 states to 40348 states and 64469 transitions. [2022-11-19 06:47:38,540 INFO L78 Accepts]: Start accepts. Automaton has 40348 states and 64469 transitions. Word has length 152 [2022-11-19 06:47:38,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:47:38,541 INFO L495 AbstractCegarLoop]: Abstraction has 40348 states and 64469 transitions. [2022-11-19 06:47:38,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-19 06:47:38,542 INFO L276 IsEmpty]: Start isEmpty. Operand 40348 states and 64469 transitions. [2022-11-19 06:47:38,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-11-19 06:47:38,560 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:47:38,560 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 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] [2022-11-19 06:47:38,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eba14fdc-9a20-4c79-8bfb-838112cc7566/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 06:47:38,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eba14fdc-9a20-4c79-8bfb-838112cc7566/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:47:38,780 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:47:38,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:47:38,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1036842378, now seen corresponding path program 1 times [2022-11-19 06:47:38,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:47:38,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130725894] [2022-11-19 06:47:38,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:47:38,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:47:39,261 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:47:39,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [600660084] [2022-11-19 06:47:39,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:47:39,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:47:39,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eba14fdc-9a20-4c79-8bfb-838112cc7566/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:47:39,263 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eba14fdc-9a20-4c79-8bfb-838112cc7566/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:47:39,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eba14fdc-9a20-4c79-8bfb-838112cc7566/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 06:47:41,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:47:41,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 5011 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 06:47:41,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:47:41,822 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-11-19 06:47:41,822 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:47:41,822 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:47:41,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130725894] [2022-11-19 06:47:41,823 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 06:47:41,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600660084] [2022-11-19 06:47:41,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600660084] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:47:41,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:47:41,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 06:47:41,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790757337] [2022-11-19 06:47:41,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:47:41,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:47:41,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:47:41,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:47:41,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:47:41,825 INFO L87 Difference]: Start difference. First operand 40348 states and 64469 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-19 06:47:49,224 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:47:51,232 WARN L539 Checker$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 06:47:55,379 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 06:47:58,181 WARN L539 Checker$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 06:47:59,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:48:07,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:48:07,131 INFO L93 Difference]: Finished difference Result 80729 states and 128969 transitions. [2022-11-19 06:48:07,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 06:48:07,134 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 153 [2022-11-19 06:48:07,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:48:07,503 INFO L225 Difference]: With dead ends: 80729 [2022-11-19 06:48:07,503 INFO L226 Difference]: Without dead ends: 40400 [2022-11-19 06:48:07,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-19 06:48:07,892 INFO L413 NwaCegarLoop]: 5776 mSDtfsCounter, 4499 mSDsluCounter, 8840 mSDsCounter, 0 mSdLazyCounter, 6623 mSolverCounterSat, 15 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4506 SdHoareTripleChecker+Valid, 14616 SdHoareTripleChecker+Invalid, 6642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 6623 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.3s IncrementalHoareTripleChecker+Time [2022-11-19 06:48:07,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4506 Valid, 14616 Invalid, 6642 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 6623 Invalid, 4 Unknown, 0 Unchecked, 22.3s Time] [2022-11-19 06:48:07,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40400 states. [2022-11-19 06:48:11,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40400 to 40382. [2022-11-19 06:48:11,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40382 states, 18643 states have (on average 1.2966797189293569) internal successors, (24174), 19544 states have internal predecessors, (24174), 20014 states have call successors, (20014), 1715 states have call predecessors, (20014), 1724 states have return successors, (20303), 19610 states have call predecessors, (20303), 20013 states have call successors, (20303) [2022-11-19 06:48:11,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40382 states to 40382 states and 64491 transitions. [2022-11-19 06:48:11,935 INFO L78 Accepts]: Start accepts. Automaton has 40382 states and 64491 transitions. Word has length 153 [2022-11-19 06:48:11,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:48:11,936 INFO L495 AbstractCegarLoop]: Abstraction has 40382 states and 64491 transitions. [2022-11-19 06:48:11,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-19 06:48:11,936 INFO L276 IsEmpty]: Start isEmpty. Operand 40382 states and 64491 transitions. [2022-11-19 06:48:11,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-11-19 06:48:11,951 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:48:11,952 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 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] [2022-11-19 06:48:11,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eba14fdc-9a20-4c79-8bfb-838112cc7566/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 06:48:12,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eba14fdc-9a20-4c79-8bfb-838112cc7566/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:48:12,166 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:48:12,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:48:12,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1296744273, now seen corresponding path program 1 times [2022-11-19 06:48:12,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:48:12,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737026586] [2022-11-19 06:48:12,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:48:12,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:48:12,354 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:48:12,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [502426054] [2022-11-19 06:48:12,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:48:12,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:48:12,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eba14fdc-9a20-4c79-8bfb-838112cc7566/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:48:12,356 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eba14fdc-9a20-4c79-8bfb-838112cc7566/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:48:12,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eba14fdc-9a20-4c79-8bfb-838112cc7566/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 06:48:14,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:48:14,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 5007 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 06:48:14,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:48:15,023 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-11-19 06:48:15,023 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:48:15,023 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:48:15,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737026586] [2022-11-19 06:48:15,023 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 06:48:15,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502426054] [2022-11-19 06:48:15,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502426054] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:48:15,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:48:15,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 06:48:15,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006018598] [2022-11-19 06:48:15,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:48:15,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:48:15,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:48:15,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:48:15,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:48:15,026 INFO L87 Difference]: Start difference. First operand 40382 states and 64491 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-19 06:48:22,518 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 06:48:24,531 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:48:26,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:48:27,925 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:48:32,364 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 06:48:40,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:48:40,596 INFO L93 Difference]: Finished difference Result 100945 states and 161208 transitions. [2022-11-19 06:48:40,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 06:48:40,597 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 151 [2022-11-19 06:48:40,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:48:41,130 INFO L225 Difference]: With dead ends: 100945 [2022-11-19 06:48:41,130 INFO L226 Difference]: Without dead ends: 60582 [2022-11-19 06:48:41,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-19 06:48:41,425 INFO L413 NwaCegarLoop]: 6395 mSDtfsCounter, 4497 mSDsluCounter, 11520 mSDsCounter, 0 mSdLazyCounter, 6843 mSolverCounterSat, 15 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4504 SdHoareTripleChecker+Valid, 17915 SdHoareTripleChecker+Invalid, 6861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 6843 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.4s IncrementalHoareTripleChecker+Time [2022-11-19 06:48:41,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4504 Valid, 17915 Invalid, 6861 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 6843 Invalid, 3 Unknown, 0 Unchecked, 21.4s Time] [2022-11-19 06:48:41,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60582 states. [2022-11-19 06:48:46,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60582 to 60532. [2022-11-19 06:48:46,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60532 states, 27929 states have (on average 1.2970389201188728) internal successors, (36225), 29314 states have internal predecessors, (36225), 30010 states have call successors, (30010), 2573 states have call predecessors, (30010), 2592 states have return successors, (30441), 29372 states have call predecessors, (30441), 30009 states have call successors, (30441) [2022-11-19 06:48:47,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60532 states to 60532 states and 96676 transitions. [2022-11-19 06:48:47,598 INFO L78 Accepts]: Start accepts. Automaton has 60532 states and 96676 transitions. Word has length 151 [2022-11-19 06:48:47,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:48:47,599 INFO L495 AbstractCegarLoop]: Abstraction has 60532 states and 96676 transitions. [2022-11-19 06:48:47,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-19 06:48:47,600 INFO L276 IsEmpty]: Start isEmpty. Operand 60532 states and 96676 transitions. [2022-11-19 06:48:47,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-19 06:48:47,625 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:48:47,626 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 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] [2022-11-19 06:48:47,653 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eba14fdc-9a20-4c79-8bfb-838112cc7566/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-19 06:48:47,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eba14fdc-9a20-4c79-8bfb-838112cc7566/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:48:47,842 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:48:47,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:48:47,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1429272679, now seen corresponding path program 1 times [2022-11-19 06:48:47,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:48:47,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573987423] [2022-11-19 06:48:47,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:48:47,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:48:48,041 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:48:48,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [180187267] [2022-11-19 06:48:48,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:48:48,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:48:48,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eba14fdc-9a20-4c79-8bfb-838112cc7566/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:48:48,043 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eba14fdc-9a20-4c79-8bfb-838112cc7566/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:48:48,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eba14fdc-9a20-4c79-8bfb-838112cc7566/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-19 06:48:50,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:48:50,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 5013 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 06:48:50,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:48:50,916 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-11-19 06:48:50,917 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:48:50,917 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:48:50,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573987423] [2022-11-19 06:48:50,917 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 06:48:50,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180187267] [2022-11-19 06:48:50,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180187267] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:48:50,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:48:50,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 06:48:50,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743669931] [2022-11-19 06:48:50,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:48:50,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:48:50,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:48:50,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:48:50,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:48:50,920 INFO L87 Difference]: Start difference. First operand 60532 states and 96676 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-19 06:48:57,569 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:49:02,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 06:49:11,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:49:11,590 INFO L93 Difference]: Finished difference Result 100913 states and 161164 transitions. [2022-11-19 06:49:11,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 06:49:11,591 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 154 [2022-11-19 06:49:11,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:49:12,048 INFO L225 Difference]: With dead ends: 100913 [2022-11-19 06:49:12,048 INFO L226 Difference]: Without dead ends: 60374 [2022-11-19 06:49:12,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-19 06:49:12,332 INFO L413 NwaCegarLoop]: 5772 mSDtfsCounter, 4507 mSDsluCounter, 8836 mSDsCounter, 0 mSdLazyCounter, 6596 mSolverCounterSat, 15 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4516 SdHoareTripleChecker+Valid, 14608 SdHoareTripleChecker+Invalid, 6613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 6596 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:49:12,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4516 Valid, 14608 Invalid, 6613 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 6596 Invalid, 2 Unknown, 0 Unchecked, 16.1s Time] [2022-11-19 06:49:12,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60374 states. [2022-11-19 06:49:17,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60374 to 60356. [2022-11-19 06:49:17,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60356 states, 27833 states have (on average 1.296626306901879) internal successors, (36089), 29186 states have internal predecessors, (36089), 29946 states have call successors, (29946), 2565 states have call predecessors, (29946), 2576 states have return successors, (30341), 29308 states have call predecessors, (30341), 29945 states have call successors, (30341) [2022-11-19 06:49:18,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60356 states to 60356 states and 96376 transitions. [2022-11-19 06:49:18,627 INFO L78 Accepts]: Start accepts. Automaton has 60356 states and 96376 transitions. Word has length 154 [2022-11-19 06:49:18,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:49:18,628 INFO L495 AbstractCegarLoop]: Abstraction has 60356 states and 96376 transitions. [2022-11-19 06:49:18,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-19 06:49:18,628 INFO L276 IsEmpty]: Start isEmpty. Operand 60356 states and 96376 transitions. [2022-11-19 06:49:18,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-11-19 06:49:18,664 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:49:18,665 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 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] [2022-11-19 06:49:18,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eba14fdc-9a20-4c79-8bfb-838112cc7566/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-19 06:49:18,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eba14fdc-9a20-4c79-8bfb-838112cc7566/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-19 06:49:18,879 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:49:18,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:49:18,880 INFO L85 PathProgramCache]: Analyzing trace with hash -287435283, now seen corresponding path program 1 times [2022-11-19 06:49:18,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:49:18,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95191381] [2022-11-19 06:49:18,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:49:18,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:49:19,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:49:19,205 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:49:19,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95191381] [2022-11-19 06:49:19,205 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-19 06:49:19,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645557672] [2022-11-19 06:49:19,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:49:19,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:49:19,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eba14fdc-9a20-4c79-8bfb-838112cc7566/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:49:19,207 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eba14fdc-9a20-4c79-8bfb-838112cc7566/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:49:19,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eba14fdc-9a20-4c79-8bfb-838112cc7566/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-19 06:49:21,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:49:21,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 5054 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 06:49:21,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:49:22,212 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-11-19 06:49:22,212 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:49:22,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645557672] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:49:22,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:49:22,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 06:49:22,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627821430] [2022-11-19 06:49:22,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:49:22,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:49:22,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:49:22,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:49:22,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:49:22,215 INFO L87 Difference]: Start difference. First operand 60356 states and 96376 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 3 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-19 06:49:28,154 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:49:29,806 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:49:34,505 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 06:49:43,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:49:43,348 INFO L93 Difference]: Finished difference Result 120749 states and 192854 transitions. [2022-11-19 06:49:43,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 06:49:43,349 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 3 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) Word has length 168 [2022-11-19 06:49:43,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:49:44,024 INFO L225 Difference]: With dead ends: 120749 [2022-11-19 06:49:44,024 INFO L226 Difference]: Without dead ends: 60412 [2022-11-19 06:49:44,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-19 06:49:44,395 INFO L413 NwaCegarLoop]: 4344 mSDtfsCounter, 4492 mSDsluCounter, 3055 mSDsCounter, 0 mSdLazyCounter, 6373 mSolverCounterSat, 28 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4499 SdHoareTripleChecker+Valid, 7399 SdHoareTripleChecker+Invalid, 6402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 6373 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.3s IncrementalHoareTripleChecker+Time [2022-11-19 06:49:44,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4499 Valid, 7399 Invalid, 6402 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [28 Valid, 6373 Invalid, 1 Unknown, 0 Unchecked, 16.3s Time] [2022-11-19 06:49:44,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60412 states. [2022-11-19 06:49:49,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60412 to 60412. [2022-11-19 06:49:49,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60412 states, 27861 states have (on average 1.296328200710671) internal successors, (36117), 29239 states have internal predecessors, (36117), 29946 states have call successors, (29946), 2568 states have call predecessors, (29946), 2604 states have return successors, (30407), 29308 states have call predecessors, (30407), 29945 states have call successors, (30407) [2022-11-19 06:49:50,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60412 states to 60412 states and 96470 transitions. [2022-11-19 06:49:50,506 INFO L78 Accepts]: Start accepts. Automaton has 60412 states and 96470 transitions. Word has length 168 [2022-11-19 06:49:50,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:49:50,523 INFO L495 AbstractCegarLoop]: Abstraction has 60412 states and 96470 transitions. [2022-11-19 06:49:50,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 3 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-19 06:49:50,523 INFO L276 IsEmpty]: Start isEmpty. Operand 60412 states and 96470 transitions. [2022-11-19 06:49:50,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-11-19 06:49:50,560 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:49:50,561 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 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] [2022-11-19 06:49:50,591 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eba14fdc-9a20-4c79-8bfb-838112cc7566/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-19 06:49:50,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eba14fdc-9a20-4c79-8bfb-838112cc7566/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:49:50,782 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:49:50,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:49:50,783 INFO L85 PathProgramCache]: Analyzing trace with hash -164830214, now seen corresponding path program 1 times [2022-11-19 06:49:50,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:49:50,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812414273] [2022-11-19 06:49:50,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:49:50,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:49:50,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:49:51,072 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:49:51,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812414273] [2022-11-19 06:49:51,073 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-19 06:49:51,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152917960] [2022-11-19 06:49:51,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:49:51,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:49:51,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eba14fdc-9a20-4c79-8bfb-838112cc7566/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:49:51,075 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eba14fdc-9a20-4c79-8bfb-838112cc7566/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:49:51,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eba14fdc-9a20-4c79-8bfb-838112cc7566/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-19 06:49:53,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:49:53,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 5050 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 06:49:53,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:49:53,636 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-11-19 06:49:53,637 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:49:53,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152917960] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:49:53,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:49:53,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 06:49:53,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262050473] [2022-11-19 06:49:53,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:49:53,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:49:53,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:49:53,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:49:53,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:49:53,639 INFO L87 Difference]: Start difference. First operand 60412 states and 96470 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 3 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-19 06:50:00,831 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:50:02,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:50:04,848 WARN L539 Checker$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 06:50:06,617 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:50:07,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []